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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Most common cause of pleural effusion in HIV patients -
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The correct answer is  Pleural effusions are seen in 70% of cases of pulmonary Kaposi sarcoma , a fact that is often helpful in the differential diagnosis. Primary effusion lymphoma (PEL), also referred to as body cavity lymphoma, presents with lymphomatous pleural, pericardial, and/ or peritoneal effusions in the absence of discrete nodal or extranodal masses. (Harrison's Principles of internal medicine, 20 th edition, page 1566)