Familial medullary thyroid cancer (FMTC) - Ronny Allan

Tag: Familial medullary thyroid cancer (FMTC)

Medullary thyroid cancer is a rare form of thyroid cancer. The term medullary describes the type of cells in the thyroid gland affected by the cancer. The majority of patients with medullary thyroid cancer (approximately 80%) have no family history of the condition; the remaining 20% of patients inherit the condition from a parent (thus the disease is ‘familial’). Familial medullary thyroid cancer is inherited in a dominant way, which means a patient with the gene mutation for medullary thyroid cancer will have a 50% chance of passing it on to their offspring.

The inherited form of medullary thyroid cancer is associated with three conditions: familial medullary thyroid cancer, multiple endocrine neoplasia type 2A (MEN2A) and multiple endocrine neoplasia type 2B (MEN2B). Both multiple endocrine neoplasia (MEN) syndromes are characterised by the presence of other diseases in addition to medullary thyroid cancer.

Familial medullary thyroid cancer is caused by a mutation in a gene called “Rearranged during Transfection” (RET) proto-oncogene.

09Oct 2023 by Ronny Allan 7 Comments

Neuroendocrine Cancer: Troublesome Thyroids

Awareness, Living with Neuroendocrine Cancer, Survivorship, Treatment

In 2013, just when I thought everything seemed to be under control, I was told I had a 'lesion' on the left upper lobe of my thyroid and that they had been monitoring it for a while. Of course at the time, you immediately assume NET. It was a bit of a shock as I had already been subjected to some radical surgery and wondered if this was just part of the relentless march of metastatic NET disease. However, that would be a simple explanation. The thyroid gland does get mentioned frequently in NET patient discussions but many of the conversations I monitored didn't seem to fit my scenario - cue relentless study! Despite the length of this blog post, it's intentionally brief, it's a huge and complex subject! I'll…

24Nov 2022 by Ronny Allan No Comments

Neuroendocrine Neoplasms (NEN) – genetic related syndromes

Awareness, Patient Advocacy

Cancer is a genetic disorder. It happens when genes that manage cell activity mutate and create abnormal cells that divide and multiply, eventually disrupting how your body works. Medical researchers estimate 5% to 12% of all cancers are caused by inherited genetic mutations that you can’t control. More frequently, cancer happens as an acquired genetic mutation. Acquired genetic mutations happen over the course of your life. This is a very general description of the close relationships between genetics and cancer but I wanted to focus below on hereditary syndromes and genetic disorders related to Neuroendocrine Neoplasms. Definitions - the differences between Hereditary vs Familial vs Genetic Disorders I wanted to start with these definitions because people may unintentionally use these three terms interchangeably which is sometimes not the correct use of…

02Oct 2017 by Ronny Allan 10 Comments

Genetics and Neuroendocrine Tumors

Awareness, Living with Neuroendocrine Cancer, Survivorship

Hereditary genetics.....where to focus In recent years, it has become increasingly apparent that a number of Neuroendocrine tumours arise as a result of germline genetic mutations and are inherited in an autosomal dominant pattern. The number of genes implicated is increasing and I cannot guarantee this post will contain all of them. Apparently, 5-10% of NETs are estimated to have a hereditary background. Hereditary syndromes associated with these include Multiple Endocrine Neoplasia (MEN), Von Hippel Lindau (VHL), Neurofibromatosis Type 1 (NF1), Tuberous Sclerosis (TS) and others. People who have a genetic condition may present with the tumors (perhaps along with an associated functional hormone syndrome) and so the genetic condition if there is one, may not be known at this point. [caption id="attachment_14317" align="aligncenter" width="1280"] Overview of genes with recurrent…

09Mar 2016 by Ronny Allan 4 Comments

A spotlight on Multiple Endocrine Neoplasia (MEN)

Awareness, Living with Neuroendocrine Cancer

This is an overview, if you require detail, try my more comprehensive post by clicking here or on the picture[caption id="attachment_38157" align="aligncenter" width="640"] Click on the picture to read more[/caption]OverviewWe all know that Neuroendocrine Tumours (NETs) and their syndromes are complex but there is even more complexity to be found in a group of related disorders known as Multiple Endocrine Neoplasia (MEN). I recommend all NET patients should try to understand the basics of MEN and vice versa, particularly as both conditions seem to come with a plethora of endocrine-related effects.MEN patients will normally have a tumour in at least two endocrine glands - thus the terms 'Multiple' and 'Endocrine' (tumours can also develop in other organs and tissues). Neoplasia is just another name for tumour and these can be non-cancerous (benign) or…

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 DiagnosisOne 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.Functional / Non-FunctionalThese tumours and associated syndromes are treatable for most but the difficult part can be arriving at a diagnosis. Moreover, without a syndrome, some of these…