Ampulla of Vater Neuroendocrine Tumor G2NCIt concept
Preferred Label : Ampulla of Vater Neuroendocrine Tumor G2;
NCIt synonyms : Neuroendocrine Tumor G2 of the Ampullary Region;
NCIt definition : A well-differentiated, intermediate-grade neuroendocrine neoplasm that arises from
the ampulla of Vater and the periampullary region. The mitotic count is 2-20 per 2
mm2 and/or the Ki-67 index is 3 to 20%.;