This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney & Ureturs, Subject name: Surgery
[{'content': "Triad of renal colic, swelling in loin which disappears after passing urine is called: \nSelect and explain. \nA. Kocher's triad, B. Saint's triad, C. Dietel's crisis, D. Charcot's triad", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) Dietel's crisisRef: Bailey 26th Edition, Page 1293Dietel's Crisis: (Intermittent Hydronephrosis)* Swelling in loin with pain* Swelling disappears with pain also disappears* Large volume of urine passed", 'role': 'assistant'}]