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': 'True about adenocarcinoma of lung -a) More common in femaleb) Smoking is not associated withc) Central cavitationsd) Upper lobe involvement is most commone) Peripheral involvement \nSelect and explain. \nA. abc, B. bcd, C. abe, D. acd', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Adenocarcinoma of lung\n\nAdenocarcinoma is the most common lung cancer, overall.\nAlso the most common type of lung cancer in women and nonsmokers.\nThis is a malignant epithelial tumor with glandular differentiation or mucin production by tumor cells.\nGrowth pattern may be any of the following\n\tAcinar \xa0 \xa0 \xa0\n\tBronchioalveolar\n\tPapillary\n\tSolid with mucin production\nThe lesions are more peripherally located, and tend to be smaller (in contrast with squamous cell carcinoma in which lesions are larger and proximally, i.e., centrally located).\nAdenocarcinomas grow more slowly than squamous cell carcinomas but tends to metastatize widely and earlier.\nMay be associated with area of scarring.', 'role': 'assistant'}]