Gastrinoma - Ronny Allan - Living with Neuroendocrine Cancer

07Jun 2023 by Ronny Allan No Comments

A spotlight on duodenal Neuroendocrine Neoplasms (dNENs)

What are Duodenal Neuroendocrine Neoplasms (dNEN)?The duodenum is technically part of the small intestine, and you can find that in most anatomy-based descriptions. One of the research references I used was titled "Somewhere between the pancreas and the small intestine" and in the case of Duodenal NENs (dNENs), I can understand why they adopted that unconventional anatomy description. I suspect they contextually meant that they are not like either of these organs, but they share some similarities. They are not normally treated like small intestine NETs (SI NETs) or pancreatic NETs (pNETs) but they share some relationships, particularly wth the latter. They are also closely aligned to the stomach (Gastric NENs) in terms of symptoms and syndromes that they sometimes present. Although they are a type of NEN (i.e. dNENs), they can…

24Apr 2023 by Ronny Allan 5 Comments

The NET Detectives

Awareness, Patient Advocacy

The NET Detectives is an awareness post.Detecting NETsIn general, it's probably true to say that Neuroendocrine Tumours (NETs) are difficult to diagnose. Some are more complex than others and their heterogeneity is legendary. In many cases, they can be quiet, and imaging is key in finding them if they are big enough to be seen. As most primary care facilities (e.g. General Practitioner (GP) offices) don't have a range of imaging devices on site, referrals are often necessary to investigate more. I don't believe it's right to say this referral is a misdiagnosis, it's just another stage in the investigation, another hunt for clues.The number of cases where incidental diagnoses occur is fairly significant in certain types. I have no numbers but appendiceal NETs are a good analogy. Symptoms are…

22Feb 2023 by Ronny Allan 2 Comments

A spotlight on Gastric Neuroendocrine Neoplasms

A spotlight on NENs - Types, Awareness, Patient Advocacy, Spotlight on NENs - Types Series, Treatment

What are Gastric NENsUnlike other anatomical types, the word Gastric is used to indicate a tumour (NET) or carcinoma (NEC) in the stomach. The stomach lies at the bottom of your oesophagus and connects to the first part of the small intestine (the duodenum). Clearly a key part of the gastrointestinal system, it processes food on its journey downwards.The stomach produces strong acid. This kills many microorganisms that might have been swallowed along with the food. It also contains special chemicals called enzymes. These are important for breaking down the food so it can be absorbed by the body. After it leaves the stomach, the partially digested food passed into the intestines where it begins to be absorbed.The main parts of the stomach are shown below (often this can give…

05Feb 2019 by Ronny Allan 1 Comment

Proton Pump Inhibitors (…..and H2 Blockers) the NET Effect

The NET Effect Series, Treatment

What are Proton pump inhibitors (PPIs)?Proton pump inhibitors (PPIs) are among the most commonly used medications in the world. They reduce the production of acid by blocking the enzyme in the wall of the stomach that produces acid. Acid is necessary for the formation of most ulcers in the oesophagus, stomach, and duodenum, and the reduction of acid with PPIs prevents ulcers and allows any ulcers that exist in the oesophagus, stomach, and duodenum to heal. PPIs are prescribed to treat acid-related conditions such as:Esophageal, duodenal and stomach ulcersNSAID-associated ulcerUlcersGastroesophageal reflux disease (GERD)Zollinger-Ellison Syndrome - ZES (note this is a syndrome associated with a functioning duodenal or pancreatic NET known as a Gastrinoma)They also are used in combination with antibiotics for eradicating Helicobacter pylori, a bacterium that together with acid…

30Oct 2018 by Ronny Allan 9 Comments

Neuroendocrine Cancer Hormonal Syndromes – a witch’s brew

Awareness

One of the key awareness messages for Neuroendocrine Cancer is the hormonal syndromes that can often accompany the diagnosis for many people. As it's a difficult disease to diagnose, many people struggle with these syndromes for some time before formal diagnosis of Neuroendocrine Cancer. Some continue to struggle after. Neuroendocrine Cancer can often be uncannily quiet, but the tumours can be 'functional' and over-secrete certain hormones to add or introduce symptoms that mimic many other diseases or conditions, such as Irritable Bowel Syndrome, Menopause, Heart disease and Asthma. In addition to common symptoms of flushing and diarrhea, others include generally feeling weak, fatigued, pain, agitated, anxious, dizzy, nauseous, acid reflux, skin irritation, anaemic, weight loss, weight gain, low blood sugar, high blood sugar, heart palpitations, headaches, sweating, high blood…

20Nov 2017 by Ronny Allan 5 Comments

Living with Neuroendocrine Cancer – the 7 Year Itch

Awareness, Diet and Nutrition, Living with Neuroendocrine Cancer, Patient Advocacy, Treatment

Share on facebook Facebook Share on twitter Twitter Share on pinterest Pinterest Share on whatsapp WhatsApp Share on email Email I quite like the Facebook memory thing. This morning I got a reminder of a post I made from 7 years ago whilst I was in hospital recovering from my 9 Nov surgery. It had taken 12 days for me to feel strong enough to venture onto social media with a simple message "I'm feeling perkier". For those not familiar with English localisms, it just means lively, spirited, bright, sunny, cheerful, animated, upbeat, buoyant, bubbly, cheery, bouncy, genial, jaunty, chirpy, sprightly, vivacious, in fine fettle, full of beans, bright-eyed and bushy-tailed. I guess I met some of these descriptors most of the time! I had gotten through the worst and…

09Oct 2017 by Ronny Allan 5 Comments

Weight – the NET Effect

Diet and Nutrition, Survivorship, The NET Effect Series

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 once wrote a patient story for an organisation and the headline was "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…

28Dec 2016 by Ronny Allan 28 Comments

Somatostatin Analogues for Neuroendocrine Cancer: Lanreotide and Octreotide

Treatment

Somatostatin Analogues are the 'workhorse' treatments for those living with NETs, particularly where certain syndromes are involved. So not just for classic NETs with Carcinoid Syndrome but also for treating the hormone overscretions caused by insulinoma, gastrinoma, glucagonoma and VIPoma (all types of pNETs) and others. They are most effective if the NETs express somatostatin receptors. They also have an anti-tumour effect but more of a slowing down of growth rather than a killing or reduction of tumour size - but there are always outliers where such effects are displayed.Somatostatin is actually a naturally occurring hormone produced by the hypothalamus and some other tissues such as the pancreas and the gastrointestinal tract. However, it can only handle the normal release of hormones. When NET syndromes occur, the naturally occurring somatostatin is unable to cope. The…

28Sep 2016 by Ronny Allan 23 Comments

Neuroendocrine Cancer – tumour markers and hormone levels

A Spotlight on NENs - Testing Series, Patient Advocacy

BackgroundSome people on hear the terms "tumour markers" and "hormone levels" when they are diagnosed with Neuroendocrine Cancer. Most of them will have had a form of medical testing at some point in their life, i.e. the sampling and testing of blood, urine, saliva, stool or body tissue. In a nutshell, the medical staff are just measuring the content of a 'substance' and then taking a view whether this is normal or not based on pre-determined ranges. These tests are normally done as a physician's reaction to symptom presentation or maintenance/surveillance of an existing diagnosed condition. Sometimes, abnormal results will lead to more specialist tests.In cancer, these tests are frequently called 'markers'. Most tumour markers are made by normal cells as well as by cancer cells; however, they are produced at…

15Sep 2016 by Ronny Allan 19 Comments

Neuroendocrine Cancer – the diarrhea jigsaw

Diet and Nutrition, Living with Neuroendocrine Cancer, Patient Advocacy, Survivorship, Treatment

Diarrhea can be a symptom of many conditions, but it is particularly key in Neuroendocrine Tumour (NET) Syndromes and types, in particular, so called Carcinoid Syndrome but also in those associated with various other NET types such as VIPoma, PPoma, Gastrinoma, Somatostatinoma, Medullary Thyroid Carcinoma.Secondly, it can be a key consequence (side effect) of the treatment for Neuroendocrine Tumours and Carcinomas, in particular following surgery where various bits of the gastrointestinal tract are excised to remove and/or debulk tumour load.There are other reasons that might be causing or contributing, including (but not limited to) endocrine problems such as hyperthryoidism, mastocytosis or Addison's disease (which may be secondary illnesses in those with NETs). It's also possible that 'non-sydromic' issues such as stress and diet are contributing. It could be caused by…

10Aug 2015 by Ronny Allan 16 Comments

The Syndromes of Neuroendocrine Cancer – Early Signs of a Late Diagnosis

Awareness

The Syndromes of Neuroendocrine Cancer - Early Signs of a Late Diagnosis One of the curious things about Neuroendocrine Cancer (NETs elsewhere in the text) is that it can very often exhibit one or more vague symptoms collectively known as a 'syndrome'. Syndrome is an apt word to describe these complications as the most general meaning in medical terms is a group of symptoms that together are characteristic of a specific disorder or disease". Having a syndrome can often be the difference between having a 'functional' condition or a non-functional' condition - see more below. This frequently makes Neuroendocrine Cancer very difficult to diagnose quickly. It's a very devious disease. It's NOT all about Carcinoid Syndrome! Most people think of Carcinoid Syndrome when they discuss NETs. Anyone suggesting that all…

Tag: Gastrinoma