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: Skin
[{'content': 'All are asociated with pemphigus except: \nSelect and explain. \nA. Thymoma, B. CLL, C. Myasthenia gravis, D. Atrophic gastritis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Di.e. Atropine gastritis Paraneoplastic pemphigus may be associated with non Hodgkin's lymphomaQ (NHL), Chronic lymphocytic leukemiaQ (CLL), Castleman's disease, thymomaQ and spindle cell tumors. And pemphigus folliaceus is associated with thymoma & /or mysthenia gravisQ.", 'role': 'assistant'}]