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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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Causes of pulmonary-renal syndrome -
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The correct answer is  The pulmonary renal syndrome is a dramatic presentation with renal and respiratory failure that is not explained by excess intravascular fluid or by severe pneumonia;it occurs in Good pasture' s disease(anti-GBM) and small-vessel vasculitis.Other causes include leptospirosis leading to Weil's disease,Hanta hemorrhagic fever and poisoning with the herbicide paraquat. Ref:Davidson's medicine-22nd edition,page no:519.