The Anatomy of NET Cancer

4 minute read time.

Zebra-Cartoon-Episode-1

Sometimes when I’m searching for medical information, I’m presented with a ‘pick-list’ of cancers which tend to be anatomy based and I find it infuriating when I cannot find my own cancer on the list.  Some respectable organisations are just not as up to date as they should be!  One of the key facets of NET Cancer is that it is not tied into a particular part of the human anatomy.   Ignorance of this fact can at best lead to misinformation and confusion about NET Cancer – at worst, misdiagnosis and unnecessary treatment for something else (including a different type of cancer in the same location). I can now totally understand why so many NET Cancer patients have become their own patient advocates and why they have to shout quite loud for recognition and understanding.

Take my own diagnosis phase, I had undergone CT scans, ultrasounds, and routine blood tests and when I look at the radiology reports produced prior to diagnosis, there were mentions of:

  • ‘peri-aortic lymphadenopathy’
  • ‘mass in the small bowel mesentery’
  • ‘multiple liver lesions’
  • ‘retro-peritoneal fibrosis’
  • ‘extensive lymphadenopathy consistent with lymphoma or metastatic adenocarcinoma’

You can see from the mostly generalised wording, there was some scope for confusion during my diagnostic phase. When I met with the consultant looking at my case, he was explaining the results of the scans but I could sense he didn’t yet have a definitive diagnosis. Notwithstanding the results of a liver biopsy which at that point had yet to be ordered, what was key in leading to the correct diagnosis was my admission to the consultant that I had been experiencing a mild and innocuous flushing sensation for several months. However, he literally had to drag this information out of me. I was lucky, I could tell from his eyes that he’d clearly heard of this in relation to a type of NET Cancer known as ‘carcinoid’ and he then correctly predicted the biopsy result.  As this is a rare and complex type of cancer, I suspect the Oncologist and Pathologist were happy with the tip-off.

My flushing ‘revelation’ came after the first CT scan and the radiologists were in fact only reporting what they ‘saw’.   In hindsight (and also in my opinion!), the scan results look typical of an advanced small intestinal NET.  From what I’ve since read, the lymphadenopathy and the mass in the mesentery appear to be in keeping with advanced carcinoid tumour local and regional growth.  Post surgery, I was told the ‘fibrosis’ was a classic desmoplastic reaction to the secretion of excess hormones (serotonin) from the primary/mesenteric tumours.  Despite the fibrotic tissue being found to be benign, I’m glad my surgeon had the foresight to get rid of what he could, as it was encircling my aorta and intravenous cava (IVC) almost occluding the latter.  Low risk of a problem but very high impact if the risk is realised – classic risk management dilemma.

My disease was not confined to the small intestine and surrounding area, my liver also had a significant amount of disease.  Once NET cancer was confirmed that led to specialist scans which can pick up tumours not easily found on conventional scanning techniques. In my case, in addition to confirming areas seen on the CT scan, it also identified distant nodal disease in the left axillary nodes (armpit area) and left SCF nodes (collar-bone area).  A recent specialist scan has identified a new ‘lesion’  in my thyroid (blog post to follow soon).

They key point I’m making here is that NET Cancer or Neuroendocrine Tumours can appear almost anywhere in the body and one which originates in the intestines isn’t bowel or colon cancer. Similarly one which originates in the (say) Pancreas, Lung or Thyroid, should not be confused with ‘core’ Pancreatic, Lung or Thyroid cancers. They are all histopathologically different cancers to NETs and the presentation, testing, treatment (curative or palliative) and prognosis can be very different.  NET Cancers need NET specialist medical teams!  Take the quite recent case in the news about a man who was told he had Pancreatic Cancer and would die within 10 months.  But a friend (who is a doctor) became curious as to why he wasn’t dead after 10 months and why he wasn’t even feeling ill!  It was then discovered he had a NET, i.e. he had a neuroendocrine rather than exocrine based cancer of the pancreas.  He subsequently had a major operation and is now reported to be cured!

For a primer on NET Cancer, there’s a rather nice set of booklets here: http://www.netpatientfoundation.org/support-information/general-informati on-on-net/   The high level booklet Your Guide to Neuroendocrine Tumours will explain the types of NET Cancer, normal locations of primary and secondary tumours and in addition lists the most common symptoms and associated syndromes.  Other booklets will go into more detail.  For medical staff and patient advocates, a very good ‘technical’ publication is available free here: download

10th November is annual NET Cancer Day, please show your support by adding your name to here: https://t.co/PG0DZViln6

I’m a ‘tweeter’ which is such a fantastic tool for spreading awareness if used properly. If you’re also a tweeter, please follow me here to help spread awareness and news about NET Cancer.  Follow me by clicking here:

https://twitter.com/RonnyAllan1

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Anonymous
  • FormerMember
    FormerMember

    Hi Ronny, I too am in this place. I recently found a lump in my breast which fortunately due to the quick turn around in breast I had a mammogram, ultrasound and biopsies in the same day and two days later got my results were staining highly suggestive of neuro endocrine a week later this was confirmed. I had my CT thorax abdo pelvis on Friday and should get the results to see if I have any presentation anywhere else this Thursday at the latest. Obviously breast is a really rare presentation and can find little info apart from research articles. Reading through your blog has been quite reassuring that although its not the best diagnosis to have their are people that do well even with advanced disease. I have a fantastic husband, three children and six grandchildren so don't plan on going anywhere yet

  • Great to hear from you.  Great attitude too.  I do hope the results are favourable to you.   This seems like a rare case and I hope they get to the bottom of everything so that a proper treatment plan can be put into place.  I'd like to keep up with your story - it would make a great blog post.  I intend to run a series of anatomy blogs based on different parts of the body - but only if you're OK with that and in any case it will be anonymised.  You can keep in touch with me on my blog Facebook site which you might want to 'Like': www.facebook.com/...

    you can message me from this facebook site which is more convenient. Best of luck with the results. 

  • FormerMember
    FormerMember

    Hi Ronny, that's fine I will see what the outcome is Thursday and get back to you. Feeling pretty well in myself although in retrospect I think I do suffer with the flushing of the skin but I was putting this down to been 'at that time of a woman's life'. Just trying to find out if there are any specialist treatment centers in yorkshire at the moment.

  • OK, check this out www.netpatientfoundation.org/.../

  • FormerMember
    FormerMember

    Thanks someone pointed me to this and pleased that the one I will be referred to is listed