This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'A 40 year old man having malaise and fatigue, dyspnea on exertion, cardiomegaly on chest X-ray, weight loss of 10 kg, mononeuritis, polyarthritis. The diagnosis is \nSelect and explain. \nA. PAN, B. SLE, C. Neuro AIDS, D. Neurosarcoid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: (D) Neurosarcoidosis# NEUROSARCOIDOSIS generally occurs only in cases of sarcoidosis with substantial systemic involvement, and signs of neurologic involvement usually are seen in patients known to have active disease.> Strictly neurologic forms are seen in fewer than 10% of patients; a subset has predominantly neuromuscular involvement.> Definitive diagnosis of neurosarcoidosis requires the exclusion of other causes of neuropathy and the identification of noncaseating sarcoid granulomas by histologic analysis of nerve and muscle biopsy specimens.> Neurological involvement: Papilledema (6%); Cranial neuropathy (59%); Peripheral neuropathy (47%); Mononeuropathy (25%); Myopathy (25%); Psychiatric disorders (19%); Cerebellar ataxia (13%) & Hydrocephalus (6%)', 'role': 'assistant'}]