This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Neuroendocrine lesions of the lung are - \nSelect and explain. \nA. Carcinoid tumor, B. Alveolar carcinoma, C. Hamartoma, D. Asthma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The normal lung contains neuroendocrine cells within the epithelium as single cells or as clusters, the neuroepithelial bodies.\nNeuroendocrine lesions of the lung may be of following types -\n\nA. Non-Neoplastic\n(i)\xa0Reactive neuroendocrine cell hyperplasia in response to inflammation or scarring.\n(ii)\xa0Idiopathic pulmonary neuroendocrine cell hyperplasia → a precursor lesion of tumorlets and carcinoids.\n\nB. Neoplastic\n(a)\xa0Benign\n(i) Tumorlets → Small, inconsequential hyperplastic neuroendocrine cells seen in areas of scarring or\xa0chronic inflammation.\n\n(b)\xa0Malignant\n(i) Carcinoid tumor\n(ii)\xa0Small cell carcinoma of the lung\n(iii)\xa0Large cell neuroendocrine carcinoma of the lung.', 'role': 'assistant'}]