Neuroendocrine Cancer: Fibrosis – an unsolved mystery?

Neuroendocrine Cancer: Fibrosis – an unsolved mystery?

Living with Neuroendocrine Cancer, Technical NETs, Treatment
Background It has long been observed that certain Neuroendocrine Tumours (NETs) are often associated with their ability to secrete hormones and these substances are thought to be responsible for the collection of symptoms which include (but not limited to) diarrhea, flushing and wheezing.  One of the lesser known aspects of this disease is the development of fibrosis, both local and distant. These fibrotic complications may lead to considerable morbidity. They can also result in incidental diagnoses of NETs after causing abdominal obstructions. The most well known form of fibrosis is 'Hedinger Syndrome' (so-called Carcinoid Heart Disease) tightly associated with midgut NETs and will not be covered further. However, mesenteric fibrosis is actually more common and also associated with midgut NETs.  There are other less common locations involved including retroperitoneal fibrosis,…
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Neuroendocrine Cancer – tumour markers and hormone levels

Neuroendocrine Cancer – tumour markers and hormone levels

Awareness, Diet and Nutrition, Living with Neuroendocrine Cancer, Patient Advocacy, Survivorship, Technical NETs, Treatment
I think most people 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 much higher levels in cancerous conditions. These substances can be found in the blood, urine, stool, tumour…
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Neuroendocrine Cancer Syndromes – Early Signs of a Late Diagnosis

Neuroendocrine Cancer Syndromes – Early Signs of a Late Diagnosis

Awareness, Diet and Nutrition, Living with Neuroendocrine Cancer, Technical NETs, Treatment
One of the curious things about Neuroendocrine Cancer (NETs going forward) 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 NET patients get carcinoid syndrome or that all symptoms of NETs are caused by carcinoid syndrome,…
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Neuroendocrine Cancer – don’t break my heart!

Neuroendocrine Cancer – don’t break my heart!

Awareness, Living with Neuroendocrine Cancer, Survivorship, Technical NETs, Treatment
Neuroendocrine Cancer has certain unique features whereby tumours can produce one or more symptoms which are known collectively as a syndrome.  Neuroendocrine Tumours secreting excess amounts of serotonin, can be accompanied by Carcinoid Syndrome which if not diagnosed and treated early enough, can lead to an additional complication known as Hedlinger Syndrome (often known as Carcinoid Heart Disease (CHD)). However, very late diagnoses can present with CHD already in place. Excess serotonin, a hormone released by NETs into the bloodstream seems to be the prime and lead suspect for causing thick ‘plaques’ or fibrosis tissue within the heart muscle and damage to (mainly) the tricuspid and pulmonary valves on the right side of the heart which can become ‘tightly narrowed’ or ‘leaky’.  It's very similar to the reasons for mesenteric and peritoneal…
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Carcinoid vs Neuroendocrine

Carcinoid vs Neuroendocrine

Awareness, Living with Neuroendocrine Cancer, Patient Advocacy, Technical NETs
OPINION There's a constant debate regarding the validity of the term 'Carcinoid'.  I've posted about this a few times and as far as I know, the debate has been raging for some years. You may have noticed that 'Carcinoid' is often used as a standalone word and tends not to be suffixed with the word 'Cancer' or 'Tumour' - unlike Bowel Cancer, Breast Cancer, Prostrate Cancer, Lung Cancer, Brain Tumour, etc.  Nobody goes around saying "Breast" or "Bowel" do they?  But they happily say "Carcinoid".  Unfortunately, the term ‘Carcinoid’ has become entrenched in both pathology and clinical literature over the past 100 years. The main problem with the word Carcinoid is that it means different things to different people. Some use the term almost exclusively to designate serotonin-producing tumours that arise from the enterochromaffin cells that can…
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