NCIt synonyms : Colorectal NEC; Large Intestinal Neuroendocrine Carcinoma;
NCIt related terms : Colorectal (Colon or Rectal) Neuroendocrine Cancer;
NCIt definition : An aggressive high-grade carcinoma with neuroendocrine differentiation that arises
from the colon or rectum. It is composed of malignant small or large cells. The mitotic
count is more than 20 per 2 mm2 and/or the Ki-67 index is more than 20%.;