Preferred Label : Head and Neck Neuroendocrine Tumor G3;
NCIt definition : A neuroendocrine neoplasm that arises from the head and neck. The mitotic count is
more than 10 per 2 mm2, the Ki-67 index is more than 20%, and there is absence of
small cell neuroendocrine carcinoma and large cell neuroendocrine carcinoma cytomorphological
features.;