Histopathological classification of gastroenteropancreatic and bronchopulmonary neuroendocrine neoplasms

The gastroenteropancreatic and bronchopulmonary organ systems harbor the majority of neuroendocrine neoplasms (NENs) of the body, comprising 70% and 20% of all NENs, respectively. Their classification distinguishes between well-differentiated and poorly differentiated NENs that are associated with similarly distinctive genetic profiles. This review focuses on a comparison of the histological classification of gastroenteropancreatic NENs and...