Diagnostics and treatment of neuroendocrin tumors today

Background: Neuroendorcin tumors are groups of neoplastic neuroendocrin cells located anywhere in the body. They can be divided into two subgroups according to their origin: 1. pancreas, 2. gastrointestinal and bronchopulmonary system of origin (formerly called carcinoid tumors). Recent classification is based on clinicopathology: 1. well differenciated neuroendocrin tumors, 2. well differentiated neuroendocrin carcinoma, 3. poorly differentiated neuroendocrin carcinoma, against former classification based on embrional origin (foregut, midgut, hintgut). Those producing bioactive agents (8–10% of NETs) cause symp…