A 28 year old male patient suddenly started experiencing severe pain in lower right abdominal region, the nature of pain was colicky. He underwent USG-KUB; where no stone was evident, but mild hydronephrosis was evident in relation to right kidney. Renal function test was normal and creatinine levels were in normal range. Urine culture was found to be negative. What should be the next step?

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Vikas Bhardwaj
Medical Technologist, AIIMS New Delhi
Updated: Apr 17, 2026