Lung Neuroendocrine Tumors (NETs) are a diverse group of neoplasms arising from neuroendocrine cells found in the lungs. These cells have characteristics of both nerve and hormone-producing cells, leading to a unique type of tumor that can release hormones into the bloodstream, causing various symptoms. Lung NETs are classified into four major types: typical carcinoid, atypical carcinoid, large cell neuroendocrine carcinoma, and small cell lung cancer.
