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': 'Which of the following is Not associated with thymoma? \nSelect and explain. \nA. Hypogammaglobinemia, B. Myasthenia gravis, C. Polymyositis, D. SIADH', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Thymoma is the commenest anterior mediastinal tumor which causes symptoms due to compression on the mediastinal structures. It is associated with the following paraneoplastic syndromes:\n• Myasthenia gravis (most common)\n• Acquired hypogammaglobulinemia\n• Pure red cell aplasia\n• Graves disease\n• Pernicious anemia\n• Dermatomyositis-polymyositis\n• Cushing syndrome.', 'role': 'assistant'}]