This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'The most likely cause of bihilar lymphadenopathy is \nSelect and explain. \nA. Histoplasmosis, B. Tuberculosis, C. Sarcoidosis, D. Aspergillosis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Sarcoidosis Chronic multisystem disorder of unknown cause characterized by accumulation of TH 1 lymphocytes and mononuclear phagocyte in various tissuesof body.Non-caseating sarcoid Granuloma in affected organsLungs (90%)Lymph nodesSkinOthersInterstitial lung disease (fibrosis of lung parenchyma)Pleura is involved, in 1-5% cases unilateral pleural effusion Cavitation is rare B/L hilar lymphadenopathy is the hallmark of Sarcoidosis B/L parotid enlargement Erythema nodosum Lupus pernio (purple blue shiny swollen lesion on nose, cheeks, lips, ears)UveitisRenal hypercalcemia with or without hypercalciuriaAhritisPeripheral neuropathyCor-pulmonale(Refer: Harrison's Principles of Internal Medicine, 18th edition, pg no: 2805-2813)", 'role': 'assistant'}]