Retrocaval ureter with stone in the retrocaval segment of the ureter

摘要

Retrocaval ureter is abnormal looping of the proximal ureter behind the inferior vena cava. The aberrant anatomy results in the compression of the ureter causing hydronephrosis. This is a very infrequent cause of hydronephrosis in children. Association of retrocaval ureter with a stone in the looping segment of the ureter is extremely rare. We report one such pediatric case which was diagnosed preoperatively with a review of pediatric-only cases reported in last 5 years.