This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Anatomy
Triad of Renal colic, Swelling in loin which disappears after passing urine is called - 
Select and explain. 
A. Kocher's triad, B. Saint's triad, C. Dietel's crisis, D. Charcot's triad
C: Dietel's crisis
Answer: C: Dietel's crisis 
Explanation: Dietel's crisis : After an attack of acute renal pain, a swelling in the loin is found. Some hours later, following the passage of large amounts of urine, the pain is relieved and swelling disappears. Ref : Bailey 25/e p1293