Morphological imaging of gastrointestinal and lung neuroendocrine neoplasms

Neuroendocrine neoplasms (NENs) predominantly arise within the intestinal tract, pancreas, and lung, but may develop in various organs commonly metastasize, especially to liver. Cross-sectional imaging (ultrasound, computed tomography, magnetic resonance imaging) play a central role detection, characterization, management, follow-up of NENs. Imaging features tumors significantly vary as per site primary tumor, tumor grade, differentiation. Most low-grade NEN present slow-growing well-delineated solid enhancing tumors, while higher-grade are typically larger, more heterogeneous masses with inner necrosis, calcification, frequent locoregional distant spread. This short review article aims main lung gastroenteropancreatic NENs on morphological techniques discuss their performance. liver metastases will not be precisely detailed.