NCIt synonyms : Colorectal NEC; Large Intestinal Neuroendocrine Carcinoma;
NCIt related terms : Colorectal (Colon or Rectal) Neuroendocrine Cancer;
NCIt definition : An aggressive, high-grade, and poorly differentiated carcinoma with neuroendocrine
differentiation that arises from the colon or rectum. The mitotic count is more than
20 per 10 HPF. It is classified as either small or large cell neuroendocrine carcinoma
based on the size of the malignant cells, the prominence of the nucleoli, and the
amount of cytoplasm.;