The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Treatment of choice in a patient with a staghorn calculus with mild hydronephrosis?   (A) ESWL   (B) PCNL   (C) RIRS   (D) Open surgery
['(B) PCNL <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) ESWL \n (B) PCNL \n (C) RIRS \n (D) Open surgery <> possible answers', '  Treatment of choice in a patient with a staghorn calculus with mild hydronephrosis? <> context@']