Grading and Staging – Neuroendocrine Neoplasms (incorporating WHO 2021 changes)

Grading and Staging – Neuroendocrine Neoplasms (incorporating WHO 2021 changes)

Patient Advocacy
One of the most discussed and sometimes confusing subjects on forums is the staging and grading of Neuroendocrine Neoplasms (NENs). Mixing them up is a common error and so it's important to understand the difference despite the apparent complexity. If I was to make a list of questions for my specialist/Oncologist at diagnosis, it would include "What is the stage, grade and differentiation of my cancer". To enable me to synchronise with the documented guidance, I'm going to use the following WHO 2019 approved terms in this post and then provide an update of the key WHO 2019 changes below. Neuroendocrine Neoplasm (NEN) - all types of Neuroendocrine tumour of whatever grade (please note Neoplasm is another word for tumour) Neuroendocrine Tumour (NET) - all well-differentiated tumours, Grade 1,2 or…
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