Home » Neuroendocrine tumors (NETs) constitute what percentage of lung cancers Cancer MCQs Neuroendocrine tumors (NETs) constitute what percentage of lung cancers January 11, 2022 21 Views Q. Neuroendocrine tumors (NETs) constitute what percentage of lung cancers A. 10 B. 20 C. 30 D. 40 Answer: 20%