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Flexible retrograde ureteroscope is now being widely used in endoscopic management of the urinary calculi. We report technique of supine ante grade flexible ureteroscopy in treating impacted upper and mid ureteric calculi in a pediatric patient. A six year-old boy with a history of acute right ureteric colic was investigated and found to have right upper and middle impacted ureteric calculi. He was planned for ureteroscopy, but the intramural part of the ureter could not be dilated. Hence, a decision was taken to do an antegrade flexible ureteroscopy in the supine position. An antegrade renal access was established in the supine position using ultrasound- guided puncture, a 22 Fr Amplatz was placed after serial dilatation of the tract and the stones were accessed using a flexible ureteroscope. The stones were then disintegrated using holmium laser. The ureter was stented at the end of the procedure. IVU done after six months revealed normal right kidney.