Ampulla of Vater Neuroendocrine Tumor G3NCIt concept
Preferred Label : Ampulla of Vater Neuroendocrine Tumor G3;
NCIt definition : A well differentiated, high grade neoplasm with neuroendocrine differentiation that
arises from the ampulla of Vater and the periampullary region. The Ki-67 index is
higher than 20%.;