……… here’s a list of 10 things I’m NOT thankful to Neuroendocrine Cancer for!
Thanks for growing inside me for years before making your vague announcement
Sorry too late, I’m metastatic and around 50% of patients will be at diagnosis (so I’m not alone!). It’s very SNEAKY!
No thanks for making a right mess inside my body!
I mean, I look really good, I look really well, but you should see my INSIDES
No thanks for generating fibrosis throughout my mesentery and retroperitoneum!
I really didn’t know what to make of this issue at diagnosis, although I did know the aorta was pretty important! Fortunately I had a surgeon who had operated on many NET patients and has seen this issue before. After my first surgery, he described it as a “dense fibrotic retroperitoneal reaction encircling his aorta and cava (inferior vena cava (IVC))”. My surgeon was known for difficult and extreme surgery, so as part of the removal of my primary, he also spent 3 hours dissecting out the retroperitoneal fibrosis surrounding these important blood vessels and managed 270 degree clearance. The remnant still shows on CT scans. Some of the removed tissue was tested and found to be benign, showing only florid inflammation and fibrosis (thankfully). That said, the abstract papers above has led me to believe that my retroperitoneal fibrosis is clinically significant. In fact I have spent the last 3 months worrying about some of it growing into reach of important vessels and only just been given the all clear (for now).
No thanks for screwing up some of my hormones
There are many hormones involved with Neuroendocrine Cancer which is unique in that different types can result in elevated levels of different hormones, often more than one is involved. Serotonin has caused fibrosisin my retroperitoneal area and is currently threatening important vessels. I don’t really need that right now!
No thanks for the ongoing symptoms and side effects
I was showing symptoms of a Neuroendocrine Cancer syndrome known as Carcinoid Syndrome (currently) such as flushing and diarrhea and fatigue was probably there too, but these were thought to be something else or ignored (by me). I don’t suffer too much nowadays other than side effects of the disease or the treatment I’ve had or receiving. However, I know from speaking to many patients the effects of the various syndromes associated with Neuroendocrine Cancer can be pretty debilitating and oppressive to quality of life.
These syndromes can be so strange and so weird, they can be very difficult for patients, nurses and doctors to treat. They can be a real ‘witch’s brew’.
Another pill for life. I have a left-sided thyroid lesion and my treatment also messes with my hormone levels.
No thanks for increasing my diabetes risk
No thanks for pushing me into pre-diabetes. My blood sugar is spiking, most likely due to treatment.
No thanks for making me retire early
I loved my job but not if it was going to kill me. I made my own decision based on how I could survive in a financial sense. Made easier as I was only 8 years from retirement but I guess I’m one of the lucky ones despite the fact I took a big hit on the income going into my bank account.
The truth is that many people still need to work whilst struggling with side effects of the cancer and its treatment. Getting some form of financial assistance from the government is not a done deal.
Neuroendocrine Cancer is a very expensive disease to treat.
This is fast becoming a big issue regardless of country and regardless of healthcare system in place. However, in privately funded healthcare, it can be exacerbated by the level of insurance cover. Read more about financial toxicity for cancer patients which is a growing problem worldwide.
……….. and no thanks to anyone who says it’s a “good cancer“
There’s a Brit saying known as “on your bike” (sometimes colloquially called “on yer bike“). It basically means “go away and stop bothering me” but there are other definitions including some ‘Anglo-Saxon’ versions (I won’t repeat those here!)
When I moved to my current home nearly 7 years ago, the removals lorry unloaded our rather dusty bikes (pedal cycles) and stuffed them in the garage where they mostly remained until this year. A couple of months ago, I dusted them off, repaired punctures etc, and basically started putting them to better use. In fact, Chris got a new one out of the deal! I’m reasonably fit (considering) but finding it so easy to opt for the sofa and there’s always something worth watching on TV, or something to do on my computer. My personal trainer (Chris ♥) tends to provide some motivation, so it felt good that the recent bike idea came from me rather than from her.
However, some of the personal motivation came from a recent ‘brush’ with potential diabetic problems. My blood glucose test has been spiking in the last 12-18 months and an HbA1c in May (a better guide) put me just inside pre-diabetic range. This prompted me to look more carefully at diet and exercise. I need to do this without losing too much weight though, I’m still struggling to put the weight back I that I lost from the June chest infection.
I have so say I’m enjoying my new exercise and have had some nice bike rides in the local forests. I’ve since had a new HbA1c test which is back in normal range so I guess something is making it spike. Lanreotide is my first guess – you can read more about Diabetes and NETs by clicking here.
I’m working with my doctors on the issue.
In the meantime, I’m getting on my bike and so can Neuroendocrine Cancer!
My chest infection is now settled, as too is the excitement and apprehension behind my first ever Ga68 PET – the outcome of that is still a work in progress. Earlier this year, my thyroid ‘lesion’ on watch and wait was given a ‘damping down’ with the prescription of a thyroid hormone supplement but I await a re-ignition of that small bush fire downstream.
Bubbling behind the scenes and clamoring for attention is the spiking of my blood glucose test results and I was very recently declared ‘at risk’ for diabetes One of my followers entitled a post in my group with “The hits keep coming” in reference to encountering yet another problem in the journey with Neuroendocrine Cancer. I now know how she feels, this issue is a bit of a ‘left fielder’. However, having analysed the situation and spoken to several doctors, I can now put pen to paper.
Neuroendocrine Cancer is not a household name (…… I’m working on that) but diabetes certainly is. The World Health Organisation reports that the number of adults living with diabetes has almost quadrupled since 1980 to 422 million adults. In USA, estimates from CDC stated around 10 million people diagnosed with diabetes with a further 84 million in pre-diabetes state (at risk). In UK around 3.7 million people have diabetes with about 4 times that amount ‘at risk’. It’s a growth industry (…….. but so is NETs – in the last 40 years, the incidence of NETs is rising at a faster rate than diabetes, a disease which some writers have described as an epidemic).
With those numbers, it follows that many NET patients will be diabetic before diagnosis, some will succumb to diabetes whether they have NETs or not, and some may have an increased risk of succumbing due to their treatment. Some may even be pushed into diabetes as a direct result of their NET type or treatment. It’s important to understand diabetes in order to understand why certain types of NET and certain treatments could have an involvement.
For understanding of this article, it’s worth noting the pancreas has two main functions: an exocrine function that helps in digestion and an endocrine function that regulates blood sugar. I have talked about the exocrine function in relationship to Neuroendocrine Cancer at length – check out this article on Pancreatic Enzyme Replacement Therapy. In this article, I now want to cover the issues with the endocrine function and blood sugar. First a short primer on diabetes – it is necessarily brief for the purposes of this article.
TypeS OF DIABETES
Type 1 and Type 2 Diabetes are fairly well-known. There’s actually more than two types, but these are the most common. Type 2 is the most prevalent with around 90% of diabetes cases. When you’ve got Type 1 diabetes, you can’t make any insulin at all. If you’ve got Type 2 diabetes, the insulin you make either can’t work effectively, or you can’t produce enough of it. Additional types may come up in the subsequent discussion.
What is the problem?
What all types of diabetes have in common is that they cause people to have too much glucose (sugar) in their blood. But we all need some glucose. It’s what gives us our energy. We get glucose when our bodies break down the carbohydrates that we eat or drink. And that glucose is released into our blood. We also need a hormone called insulin. It’s made by our pancreas, and it’s insulin that allows the glucose in our blood to enter our cells and fuel our bodies.
If you don’t have diabetes, your pancreas senses when glucose has entered your bloodstream and releases the right amount of insulin, so the glucose can get into your cells. But if you have diabetes, this system doesn’t work properly. Diabetes is associated by being overweight but there isn’t a 100% correlation with that. However, when an individual becomes overweight, there is an increase in free fatty acids in the blood stream which may contribute to reduced insulin sensitivity in the tissues, leading to increased glucose levels in blood.
Symptoms and diagnosis of Diabetes
Different people develop different symptoms. In diabetes, because glucose can’t get into your cells, it begins to build up in your blood. And too much glucose in your blood causes a lot of different problems. To begin with it leads to diabetes symptoms, like having to wee a lot (particularly at night), being incredibly thirsty, and feeling very tired. You may also lose weight, get infections like thrush or suffer from blurred vision and slow healing wounds.
I see these symptoms mentioned very frequently and normally people are trying to associate them with NETs and/or the treatment for NETs.
Diabetes diagnosis is normally triggered diagnosed based on blood tests such as fasting Blood Glucose (snapshot) and/or Glycated Hemoglobin (A1C) or HbA1C.
Over a long period of time, high glucose levels in your blood can seriously damage your heart, your eyes, your feet and your kidneys. These are known as the complications of diabetes.
But with the right treatment and care, people can live a healthy life. And there’s much less risk that someone will experience these complications.
What are the direct connections with Diabetes and NETs?
It’s not surprising that diabetes is mostly associated with Neuroendocrine Tumors of the Pancreas but there are other areas of risk for other types of NETs including to those who are existing diabetics – see below.
The main types of surgery for Neuroendocrine Tumors of the Pancreas are Distal Pancreatectomy (tail), Sub-total pancreatectomy (central/tail), Classic Whipple (pancreaticoduodenectomy – head and/or neck of pancreas), Total pancreatectomy (remove the entire pancreas) or an Enucleation (scooping out the tumour with having to remove too much surrounding tissue). From the PERT article link above (exocrine function), you can see why some people need this treatment to offset issues of reduced production of pancreatic enzymes. The same issue can develop with a reduced endocrine function leading to the development of diabetes.
The different types of functional pancreatic NETs often called syndromes in their own right due to their secretory role. One might think that Insulinomas are connected to diabetes issues but this hormonal syndrome is actually associated with low blood sugar (hypoglycemia), although low blood sugar can turn out to be a complication of diabetes treatment.
A NET syndrome known as Glucagonoma (a type of functional pancreatic NET) is associated with high blood glucose levels. About 5-10% of pancreatic neuroendocrine tumors are Glucagonomas, tumors that produce an inappropriate abundance of the hormone glucagon. Glucagon balances the effects of insulin by regulating the amount of sugar in your blood. If you have too much glucagon, your cells don’t store sugar and instead sugar stays in your bloodstream. Glucagonoma therefore leads to diabetes-like symptoms (amongst other symptoms). In fact Glucagonoma is sometimes called the 4D syndrome – consists of diabetes, dermatitis, deep venous thrombosis (DVT), and depression.
Another functional pancreatic NET known as Somatostatinoma is prone to developing insulin resistance. Somatostatinomas produce excessive amounts of somatostatin which interferes with the insulin/glucagon function and could therefore lead to diabetes.
Diabetes caused by cancer or cancer treatment
Worth noting that this type of diabetes is sometimes known as ‘Pancreatogenic diabetes’ and this is actually classified by the American Diabetes Association and by the World Health Organization as type 3c diabetes mellitus (T3cDM) and refers to diabetes due to impairment in pancreatic endocrine function due to acute cancer and cancer treatment (and several other conditions). The texts tend to point to cancers (and other conditions) of the pancreas rather than system wide. Prevalence data on T3cDM are scarce because of insufficient research in this area and challenges with accurate diabetes classification in clinical practice. (Authors note: Slightly confusing as many text say that type 3 diabetes is proposed for insulin resistance in the brain (diabetes associated with Alzheimer’s disease). There’s another term for a complete removal of the entire pancreas – Pancreoprivic Diabetes
Other treatment risks
Somatostatin Analogues (e.g. Octreotide and Lanreotide) are common drugs used to control NET Syndromes and are also said to have an anti-tumor effect. They are known to inhibit several hormones including glucagon and insulin and consequently may interfere with blood glucose levels. The leaflets for both drugs clearly state this side effect with a warning that diabetics who have been prescribed the drug, should inform their doctors so that dosages can be adjusted if necessary. The side effects lists also indicates high and low blood glucose symptoms indicating it can cause both low and high blood glucose (hypoglycemia and hyperglycemia). For those who are pre-diabetic or close to pre-diabetic status, there is a possibility that the drug may push blood tests into diabetic ranges. Afinitor (Everolimus). The patient information for Afinitor (Everolimus) clearly states “Increased blood sugar and fat (cholesterol and triglycerides) levels in blood: Your health care provider should do blood tests to check your fasting blood sugar, cholesterol and triglyceride levels in the blood before you start treatment with AFINITOR and during treatment with AFINITOR” Sutent (Sunitinib). The patient information for Sutent (Sinitinib) clearly states that low blood sugar (hypoglycemia) is a potential side effect. It also advises that low blood sugar with SUTENT may be worse in patients who have diabetes and take anti-diabetic medicines. Your healthcare provider should check your blood sugar levels regularly during treatment with SUTENT and may need to adjust the dose of your anti-diabetic medicines.
In rare cases, certain NETs may produce too much Adrenocorticotropic hormone (ACTH), a substance that causes the adrenal glands to make too much cortisol and other hormones. This is often associated with Cushing’s syndrome. Cortisol increases our blood pressure and blood glucose levels with can lead to diabetes as a result of untreated Cushing’s syndrome.
I think it’s sensible for all NET patients, particularly those with involvement as per above and who are showing the signs of hypoglycemia and hyperglycemia, to be checked regularly for blood glucose and if necessary HbA1c. Many patient information leaflets for the common NET treatments also indicate this is necessary. Always tell your prescribing doctors if you are a diabetic or about any history of low or high blood glucose before treatment for NETs.
My brush with Diabetes (as at Jan 2019)
My blood glucose levels started to climb slightly in 2016 but HbA1c remained normal. However, an HbA1c test in early 2018 put me into pre-diabetic range (44 mmoL/moL). I explained some of the above article to my GP who is corresponding with a diabetes expert at secondary care – the expert suggested that I need to be monitored carefully as weight loss is not necessarily the best response. I have kept my NET team up to date.
At the time of updating, two separate and sequential HbA1c tests (3 month interval) came back normal at 36 mmoL/moL. I’m pragmatic enough to know that I do not need to lose weight as one of the aims of reducing my blood glucose and HbA1c levels (something emphasised by the above mentioned diabetes specialist).
I even got on my bike to do a little bit more exercise just in case!
At this point, I cannot yet say if this is the beginning of progressive Type II diabetes or if my medication is causing these spikes in my blood glucose and HbA1c. Judging by 2 x normal HbA1c, looks like the somatostatin analogue (Lanreotide in my case) may caused a spike to a pre-diabetes score. I will keep you posted.
Summary – if you are noticing these symptoms, get your blood sugar checked (with acknowledgement to Dr Pantalone from Cleveland Clinic)
1. You’re making more trips to the bathroom
Having to go to the bathroom more than normal, particularly at night, is a sign that your blood sugar might be out of whack.
Dr. Pantalone says one of his patients came in for a diagnosis after a family member noticed that he was using the bathroom during each commercial break when they watched TV.
2. You’re getting frequent urinary or yeast infections
When your blood sugar is high and your kidneys can’t filter it well enough, sugar ends up in the urine. More sugar in a warm, moist environment can cause urinary tract and yeast infections, especially in women.
3. You’re losing weight without trying
If you have diabetes, your body isn’t able to use glucose (sugar) as effectively for its energy. Instead, your body will start burning fat stores, and you may experience unexpected weight loss.
4. Your vision is getting worse
High sugar levels can distort the lenses in your eyes, worsening your vision. Changes in your eyeglass prescription or vision are sometimes a sign of diabetes.
5. You’re feeling fatigued or exhausted
Several underlying causes of fatigue may relate to diabetes/high sugar levels, including dehydration (from frequent urination, which can disrupt sleep) and kidney damage.
This feeling of exhaustion is often persistent and can interfere with your daily activities, says Dr Pantalone.
6. You’re noticing skin discoloration
Something that Dr. Pantalone often sees in patients before a diabetes diagnosis is dark skin in the neck folds and over the knuckles. Insulin resistance can cause this condition, known as acanthosis nigricans.
Firstly, let me say that I have no intention of advising you how to lose or gain weight! Rather, I’d like to discuss what factors might be involved and why people with NETs might lose or gain weight either at diagnosis or after treatment. Clearly I can talk freely about my own experience and associated weight issues. If nothing else, it might help some in thinking about what is causing their own weight issues.
I wrote a patient story for an organisation over 3 years ago and it started with the words “Did you mean to lose weight”. Those were actually the words a nurse said to me after I nonchalantly told her I thought I’d lost some weight (….about half a stone). I answered the question with “no” and this response triggered a sequence of events that led to all the stories in all the posts in this blog (i.e. my diagnosis).
I annoyingly can’t remember at which point I started to lose the weight but I was initially reported to have Iron Deficiency Anemia due to a low hemoglobin result and my subsequent iron test (Serum Ferritin) was also low and out of normal range. This, combined with the weight loss, the GP was spot on by referring me to a clinic. The sequence of events during the referral led to a diagnosis of metastatic NETs (Small Intestine Primary). If I had been a betting man, I would have put money on my GP thinking “Colorectal Cancer”. So my adage “If your doctors don’t suspect something, they won’t detect anything” applies.
I can also tell you that I weigh myself most days at the same time using the same scales. Weight loss or gain needs to be recorded. Clearly 2 or 3 pounds is nothing to worry about, I found you could put on or lose that amount in a day, depending on time of weighing and food intake. I’m looking for downwards or upwards trends of 7lbs or more (3kg).
Why did I lose weight?
The drop from 12st to 11st was clearly something to do with the anemia symptom (the NETs). But after diagnosis, I had major surgery about 10 weeks later. When I left the hospital after my 19 day stay, I was a whole stone lighter (14 lbs or 6.3 kg). I guess 3 feet of intestine, the cecum, an ascending colon, a bit of a transverse colon together with an army of lymph nodes and other abdominal ‘gubbins’ actually weighs a few pounds.
However, add the gradual introduction of foods to alleviate pressure on the ‘new plumbing’, and this is also going to have an effect on weight. I remember my Oncologist after the surgery saying to use full fat milk – the context is lost in memory but I guess he was trying to help me put weight back on. I also vividly remember many of my clothes not fitting me after this surgery. In fact, since 2010, I’ve actually dropped 2 trouser sizes and one shirt/jumper size. I did spend a lot of time in the toilet over the coming months, so I guess that also had an impact! However, what I wasn’t aware of was the side effect of my surgery. I started to put on some weight in time for my next big surgery – a liver resection. The average adult liver weighs 1.5 kg so I lost another 1 kg in one day based on a 66% liver resection.
However, what was also going on was something that took me a while to figure out – malabsorption and vitamin/mineral deficiency. My new ‘plumbing’ wasn’t really as efficient as my old one, so the malabsorption. issues caused by a lack of terminal ileum was slowly starting to have an effect. The commencement of Lanreotide in Dec 2010 added to this complication. That knowledge led me to understand some of the more esoteric nutritional issues that can have a big effect on NET patients and actually lead to a host of side effects that might be confused with one of the several NET syndromes. What it also confirmed to me was that I could still eat foods I enjoy without worrying too much about the effect on my remnant tumours or the threat of a recurrence of my carcinoid syndrome, something I was experiencing prior to and after diagnosis.
Armed with the ‘consequences of NETs’ knowledge, I did eventually adjust my diet and my weight has now ‘flat-lined’ at around 10 st 7 lbs (give or take 1 or 2 lbs fluctuation). Amazingly, the same weight I was when I left hospital after major surgery, looking thin and gaunt and not very well at all! The difference to day is that I have adapted to my new weight and look fit and healthy.
I actually lost another half a stone (7 lbs or 3.5 kg) in 2014 whilst training for an 84 mile charity walk – many commented that I looked thin and gaunt despite being extremely fit from all the training. Perspectives. It took several months to put the weight back on but at least I knew what had caused the loss and then subsequent gain.
I don’t have any appetite issues although I try to avoid big meals due to a shorter gut, so I snack more. With the exception of the 4 months of intense training for the 84 mile hike, I cannot seem to lose or gain weight. As my current weight is bang in the middle of the BMI green zone (healthy), I’m content.
Why do NET patients lose weight?
That’s a tricky one but any authoritative resource will confirm fairly obvious things such as (but not limited to) loss of appetite and side effects of cancer treatments. NETs can be complex so I resorted to researching the ISI Book on NETs, a favourite resource of mine. I wanted to check out any specific mentions of weight and NETs whether at diagnosis or beyond. Here’s some of the things I found out:
Carcinoid Syndrome. Weight loss is listed but not as high a percentage as I thought – although it tends to be tied into those affected most with diarrhea.
Gastrinoma/Zollinger-Ellison Syndrome. Up to half of these patients will have weight loss at diagnosis.
Glucagonoma. 90% will have weight loss.
Pheochromocytoma. Weight loss is usual.
Somatostatinoma. Weight loss in one-third of pancreatic cases and one-fifth in intestinal cases.
VIPoma. Weight loss is usual.
MEN Syndromes. One of the presentational symptoms can be weight loss.
Secondary Effects of NETs.
Many NETs can result in diabetes (particularly certain pNETs) and as somatostatin analogues can inhibit insulin, it could push those at borderline levels into formal diabetic levels (including any type of NET using long term somatostatin analogues). In people with diabetes, insufficient insulin prevents the body from getting glucose from the blood into the body’s cells to use as energy. When this occurs, the body starts burning fat and muscle for energy, causing a reduction in overall body weight.
It must be emphasised that there will always be exceptions and the above will not apply to every single patient with one of the above.
What about weight gain?
You always associate weight loss with cancer patients but there are some types of NETs and associated syndromes which might actually cause weight gain. Here’s what I found from ISI and other sources (as mentioned):
Cushing’s Syndrome. Centripetal weight gain is mentioned. (Centripetal – tends to the centre of the body). I also noted that Cushing’s Syndrome tends to be much more prevalent in females. Cushing’s syndrome comprises the signs and symptoms caused by excessive amounts of the hormone cortisol (hypercortisolism) or by an overdosage of drugs known as glucocorticoids.
Insulinoma. Weight gain occurs in around 40% of cases, because patients may eat frequently to avoid symptoms. However, according to an Insulinoma support group site, I did note that after treatment (some stability), things can improve.
Again, it must be emphasised that there will always be exceptions and the above will not apply to every single patient with one of the above. As in weight loss scenarios, the Secondary Effects of NETs can have an effect.Hypothyroidism is another potential issue and weight gain is a listed symptom. I just been diagnosed with hypothyroidism this year but I was not gaining weight!
The NETs Jigsaw
Like anything in NETs, things can get complex. So it is entirely possible that weight loss or weight gain is directly caused by NETs, can be caused by side effects/secondary effects of treatment, and it’s also possible that it could be something unrelated to NETs (Dr Liu “Even NET patients get regular illnesses“). I guess some people might have a good idea of the reason for theirs – my initial weight loss was without doubt caused by the cancer and the post diagnostic issues caused by the consequences of the cancer.
I guess that weight loss or weight gain can be a worry. I also suspect that people might be happy to lose or gain weight if they were under/over weight before diagnosis (every cloud etc). However, if you are progressively losing weight, I encourage you to seek advice soonest or ask to see a dietician (preferably one who understands NETs).
Edit: I changed my blood thinner in May 2017 and lost 2kg (4 pounds) after 6 months.
Edit: I started Creon at the beginning of 2018 (read about this here) and almost immediately put on 2kg (4 pounds) to offset the 2kg loss from 6 months prior. However, no real change after 3 months of Creon (March 2018).
Edit: I was recently diagnosed with Hypothyroidism, one of the symptoms can be weight gain. Clearly that has not applied to me. Hyperthyroidism is the opposite condition where weight loss is a symptom.
Edit: Due to a bad chest infection in June 2018 and due to the consequences of the effects of that illness and most likely the treatments undergone, I have dropped three quarters of a stone (~10lbs). My lightest weight for over 30 years. To me that is a significant loss of weight in such a short space of time. Currently trying to put it back on again – I need the weight!
Edit: 4 Sep 2018. After the 10lbs (~4.5kg) loss following the chest infection, people who see me regularly have noticed the visible difference. I’m still struggling to get back beyond 10st after 2 months. I’m monitoring this really closely.
Edit: 28 Nov 2018. I’m back at 10st after increasing my dosage of Creon.
Edit: 10 Jan 2019. I’m back at 10st 3lbs, my approximate weight before the chest infection. It’s taken 7 months and the recent acceleration coincides with Creon dose increase.
For those wishing to see the output from an online discussion with Tara Whyand on the subject of ‘Weight’ issues for NET patients – please see this link inside my closed Facebook group.
When I was discharged from hospital following major surgery in Nov 2010, I knew I would shortly be commencing long-term monthly ‘somatostatin analogue’ treatment and had assumed Octreotide (Sandostatin LAR) would be the drug of choice. However, my Oncologist prescribed Lanreotide (known in the UK as Somatuline Autogel and elsewhere as Somatuline Depot). Technically this is a hormone therapy (it’s not chemo).
Somatostatin Analogues (Octreotide/Lanreotide) are mainstay treatments for many Neuroendocrine Cancer patients and their introduction is a very significant factor in the improvement of both prognostic outcomes and quality of life. Both drugs are designed to control Carcinoid Syndrome (but can be used selectively in other NET syndromes) and both have anti-tumour effects. Check out my Lanreotide vs Octreotide comparison blog.
Although I didn’t relish the thought of any injection in the ‘rear end’ every 28 days for the rest of my life, I admit to being slightly relieved with his choice. I had been reading about patient experiences with the alternative, mainly the needle length and the occasional problems mixing the drug prior to injection. Although Lanreotide has a similar gauge (thickness), the needle is a good bit shorter and is deep subcutaneous rather than Octreotide LAR’s intramuscular (IM) route. No mixing is required as Lanreotide comes prefilled.
If you’re interested in the science, please be aware that a somatostatin analogue is a synthetic (manufactured) version of a naturally occurring hormone which inhibits the peptides and amines that can be dangerously hypersecreted by certain neuroendocrine tumours.
Following an Octreotide Scan, various areas lit up confirming the output from previous CT scans. It also confirmed new ‘hotspots’ for further investigation. This specialist scan confirmed I probably had working receptors to receive something known as a Somatostatin Analogue to help with combatting the effects of Carcinoid Syndrome (please note that not having working receptors does not mean there is no benefit of receiving somatostatin analogues). I was therefore prescribed daily Octreotide (self-injecting) whilst I was waiting for my first major ‘debulking’ surgery, This treatment did eventually lessen the main effect of the carcinoid syndrome, facial flushing. It wasn’t until after my first surgery that the facial flushing was dramatically reduced. I commenced Lanreotide on 9 Dec 2010 and I haven’t had a facial flush since. It’s worth adding that my Chromogranin A (CgA) blood test (correlated to tumour mass) did not return to normal until after a liver resection 3 months later. My 5HIAA urine test results (mainly correlated to serotonin levels) returned to normal prior to liver surgeryin Apr 2011 indicating the Lanreotide was doing its job! Somatostatin Analogue side effects are to be expected and most people seem to have different and/or greater or lesser effects than others. The daily Octreotide did not bother me too much other than some discolouring of the stomach at the injection sites (i.e. black and blue!) ….I’m more observant nowadays, so it’s possible I may not have recorded this experience properly.
If you read the UK patient leafletwhich comes with each injection, you can see a list of potential side effects as long as your arm. Neuroendocrine Cancer comes with many signs, syndromes, symptoms and suspicions, so I always advise caution and some analysis when assigning reasons for problems encountered. For North America, the equivalent instructions can be found here (Somatuline Depot). I don’t know precisely why (……. I do have my suspicions), but I’m always very sceptical about the criteria used to compile the list of side effects for any medicine. In my own mind, I’m fairly certain that people have existing symptoms or new symptoms as a result of coincidental treatment that are erroneously labelled under drugs during trials.
You can also self-inject Lanreotide but I’m not ready for that yet! If you do self inject, please note it the site is “the upper outer part of your thigh”. Check out the Ipsen leaflet here.
I think the injection site is very important and getting this wrong will worsen the side effects. For the Healthcare Professional or trained family member administration, the site should be the superior external quadrant but not of the whole ‘butt’, it means of the left or right buttock that is being used on an alternative basis. If nurses think the whole ‘butt’, they might be tempted to stick it quite close to the ‘intergluteal cleft’ – not advisable!
Although the patient leaflets are very clear on how to administer the drug, once the location is established, I always discuss the following with the Nurse before I receive the ‘dart’:
1. The injection should have been removed from the fridge at least 30 minutes before treatment. However, please the product can be put back in the fridge in the original packaging for later use, provided it has been stored for no longer than 24 hours at below 40 deg C (104 deg F) and the number of ‘temperature excursions’ does not exceed three. If you are taking the drug somewhere to be administered or were waiting on a home visit, this might with scheduling issues.
2. Don’t pinch the skin, stretch it.
3. Put the needle in fast at 90 degrees, inject the drug slow – 20 seconds is recommended. As the drug is viscous, in any case, there is normally some resistance to a fast release.
4. Do not rub or massage the area after as this action can interfere with the formulation of the drug. This is clearly stated on the drug information leaflet.
My experience with side effects. People have different experiences with side effects and just because a particular side effect is mentioned, does not mean to say that everyone will be troubled – many patients experience little or none. For me, over 7 years, I think I can attribute the following to Lanreotide:
itching but only on the legs below the knees centred on the ankles – and nearly always the right leg. Occasionally, the injection site will itch but only for a day or two. I have a tub of emollient cream (almond oil) on standby which seems to calm it down. Note …… a little bit of me thinks there could be a connection with vitamin/mineral deficiency and perhaps a coincidental occurrence and this problem seems much less of an issue over 7 years later. EDIT- could have been Hypothyroidism – click here.
minor pain at the injection site but this only lasts for an hour or two and I believe this to be associated with the administration of the injection, i.e. if the injection is done properly, I don’t really have this problem except for a second or two as it enters. Once, I had pain for 10 days. In my own experience, the best and least painful injections are those done by trained personnel who are confident.
small lumps form at the injection site which is alternating superior external quadrant of the each buttock. You may occasionally hear these being called ‘granulomas‘ or ‘injection site granulomas’. The issue of ‘injection site granulomas’ seems to figure in both Lanreotide and Octreotide. Gluteal injection site granulomas are a very common finding on CT and plain radiographs. They occur as a result of subcutaneous (i.e. intra-lipomatous) rather than intramuscular injection of drugs, which cause localised fat necrosis, scar formation and dystrophic calcification. But no-one seems to know why they occur with somatostatin analogues. I find that they are more conspicuous if the injection is done slightly too high which was my initial experience and they took months to fade. I opted to stand up for the first two injections and I attribute this decision for a slightly too high injection site. I now lie down which is actually recommended for the smaller and thinner patient. Although the lumps have reduced in size, I have not seen a new lump for some time indicating location might have been the cause. They sometimes show up on scans. This is not a new problem and has been highlighted for the last 10 years in academic papers. This particular paper is useful and the conclusion confirms this is not something that should worry patients too much. Read more here
fatigue normally within 24-48 hours of the injection but this is not consistent. Not even sure it can be classed as proper fatigue but it’s a ‘you need to sit down and fall asleep‘ feeling! When this occurs, it normally only lasts for 1 day before the normal energy levels return. Again, like the itching, this appears to be less of an issue today.
malabsorption. although the side effects of gastro-intestinal (GI) surgery and gallbladder removal can cause malabsorption issues leading to steatorrhea (basically the inability to digest fat properly); somatostatin analogues can cause or exacerbate existing steatorrhea, as they inhibit the production of digestive/pancreatic enzymes which aid fat digestion. Most months, I notice a marked but short-term increase in this problem normally within 48-72 hours of the injection.
elevated blood glucose. This is a new issue in 2018 but has been brewing for a year or two. The patient information leaflet for Lanreotide (and for Octreotide) clearly states that this is a potential side effect and also asks those who are already diabetic, to consult their doctor about monitoring doses of diabetic medicine. I’m working with my doctors to keep my blood glucose down to avoid becoming diabetic. Please read this article covering the connections between NETs and Diabetes
A few years ago, there was some ‘talk’ that somatostatin analogues were also able to stunt or reverse the growth of certain neuroendocrine tumours. Has this been the case for me? Possibly. I’ve had regular CT scans every 3-6 months and since two bouts of major surgery in 2010/2011, I’ve also had 3 x Octreoscans over the same period. I did once spend a day analysing 5 years of scan results looking for variations in size and concluded that there was a stable trend and potentially a fading of one or two of my largest liver tumours. I was reminded these two types of scans were not really precise enough to detect small millimetre increases or decreases and as there were other factors at play, there was little commitment to make this declaration. However, I did note in the summary of theCLARINETstudy, Lanreotide was associated with prolonged progression-free survival among patients with advanced, grade 1 or 2 (Ki-67 <10%) enteropancreatic, somatostatin receptor–positive neuroendocrine tumours with prior stable disease, irrespective of the hepatic tumour volume. In terms of its anti-proliferative effects, aninterim report from the CLARINET extension studysuggested longer-term Lanreotide treatment is well tolerated with ‘anti-tumour’ effects in patients with progressive disease. The final CLARINET open label extension studyreport additionally provided evidence for long-term PFS benefits of Lanreotide Autogel 120 mg in patients with indolent pancreatic and intestinal NETs.
There’s currently a trial ongoing in relation to Lanreotide and Lung NETs – read by clicking here.
I have my ups and downs and I do feel quite well most of the time. Most people tell me I look quite well too – lucky they can’t see my insides! Over the last 7 years, I’ve made some fairly significant adjustments to cope with my condition and maintain a reasonable quality of life – my monthly injection of Lanreotide is no doubt playing a big part.
Finally, please spend 5 minutes watching this fascinating video from Ipsen. It explains in easy terms how Lanreotide works. It also has a useful summary of the side effects at the end. Click here to watch the video.
I’ve just been enrolled onto a new service called HomeZone whereby the injection is now administered at my home via an Ipsen provided and funded nurse. Read here to see if you can also take advantage of this service.
In July 2018, I received my 100th injection of Somatuline Autogel (Lanreotide). I was very grateful to still be here so I thought it was worth a celebratory cake – injection themed!
A couple of years ago, I received a request from a reader asking if I would write an article about all the symptoms experienced by a Neuroendocrine Cancer patient and how to sort out what is and what isn’t associated with NETs.
Although I chuckled and raised eyebrows at the request, inside I was genuinely humbled that someone thought I was capable of achieving this herculean task. I actually gave it quite a bit of thought to the point of compiling a matrix of types of NET, main symptoms, cross-referenced with the symptoms of the most common reported comorbidities. After it started to look like it might be bigger than the Empire State Building, I came to the conclusion that it’s an almost impossible task for a wee Scottish guy with less common disease 🙂 I also started to suspect that even the world’s top NET experts had not accomplished it either.
Here’s a picture of my work to date:
I have, however, dabbled in attempts to work out my own problems over the past few years. NETs can present with a ‘syndrome’ – a bunch of symptoms normally caused by excessivehormone secretion, some of which are particularly vague and can sometimes continue to cause issues after treatment and beyond – it’s a real witch’s brew of symptoms. They can also cause non-syndromic issues pertaining to treatment side effects and it must also be noted that even NET patients get regular illnesses which adds to the issues healthcare professionals and patients face in monitoring NETs.
In my article “Neuroendocrine Cancer Syndromes – early signs of a late diagnosis”, I focused on the key symptoms experienced pre-diagnosis and then discussed how you might go about sorting out the symptoms from main side effects post treatment (another regular conundrum for most). On a similar subject, you might want to check out my 5 E’s blog for carcinoid syndrome. I also compiled an article about the source of flushing and diarrhea given there were many differential diagnoses and not just syndromes.
NETs vs Other Illnesses
Adding another jigsaw piece to the issues with cancer and side effects – common comorbidities (many of an endocrine nature) can arise simultaneously. Is it connected with NETs are just another illness to manage alongside? All of these factors can make it really difficult to determine the source of the symptoms. I’m always conscious that the majority of NET patients are in their 5th decade onward and at an age where things start to go wrong quite naturally due to ‘time’ and ‘wear and tear’.
Here’s one classic example of this problem, I can see many people on forums also have diabetes (an endocrine disease). In the United States alone, nearly 7 million people have undiagnosed diabetes, according to the American Diabetes Association. I can also see from the news in UK, that this is becoming a much bigger deal too – a report published in Feb 2018 claims that diagnoses have doubled in 20 years. I’ve used the diabetes link as an example, there will be many other very common factors at play, e.g. hypothyroidism an age and gender relation issue. It is certainly possible that many of the problems people face might just be an as yet undiagnosed/underlying condition, unconnected with NETs. To quote the great Dr Eric Liu, “even NET Patients get regular illnesses”. Working it out is rather difficult though. Sometimes pragmatism is required.
Syndromes vs Side Effects of Treatment
On forums where most people have a diagnosis and are undergoing treatment, there is regular discussion and Q&As about the source of symptoms, i.e. are they a result of a functioning syndrome (i.e. a consequence of the cancer) or something else? For example, some people complain they still have (so-called) carcinoidsyndrome diarrhea after bowel surgery………that needs some careful thought and understanding before coming to what might just be the wrong conclusion, particularly if all tumour markers are normal. I have lost count of the number of times someone has asked about a symptom on a forum and got 50 different answers. One of the reasons why forums can be good at frightening rather than frighteningly good. Personally, I never compare myself to strangers on the internet. I just hope most people are using the forums as ‘sounding boards’ and are simultaneously addressing these very complex issues with their doctors when they are genuinely concerned.
I really feel for anyone who is going through a difficult diagnosisor has been diagnosed and then continues to have numerous problems after initial treatment. I also have a little bit of sympathy for primary care medical staff on the basis this is just one of over 200 types of cancer, many of which have wide age groupings adding to the complexity and difficulty. Moreover, many of the symptoms experienced by NET patients on analysis look very similar to everyday illnesses and other ailments. And if that wasn’t demanding enough for doctors, many patients present with already established and diagnosed comorbidities (other illnesses) which add another level of complexity. These difficulties can then continue throughout treatment. It can be a real challenge and I’m sure even Doctors can be totally flummoxed on occasion by patient presentations.
It is extremely difficult to “sort out the symptoms” when faced with multiple locations/tumour sub-types, multiple treatments causing multiple side effects, multiple side effects causing multiple symptoms, multiple comorbidities with symptoms similar to cancer syndromes and treatment side effects (and vice versa). This disease can be very individual and what happens to one might not happen to another. Although we hope doctors generally take a holistic view when treating NET patients, I have a view that sometimes focussing in on a particular symptom might occasionally be a more effective route (the bottom-up approach – pun not intended!). When eating an elephant, take one bite at a time! It’s useful to know about the range of tumor markers and hormone markers – read more here.
One thing I have learned ……educate yourself to the best of your abilities. This will help you to better advocate for yourself. Improvements are possible.
Neuroendocrine Cancer is a very difficult jigsaw and you sometimes need to look very hard for the missing piece! The ‘missing piece’ can be variable and very individual, i.e. a NET specialist, access to a particular treatment or even just more support or access to support information that works.