Indian J Nephrol Close
 

Figure 1: Transabdominal ultrasound showed the presence of two kidneys fused at the pole on the right side and an empty left renal fossa. The fused kidneys had malrotated pelvicalyceal system forming an “S” shaped anomaly called sigmoid kidney. A grossly dilated tortuous tubular structure representing a persistent ureteric bud was seen at the base of the urinary bladder. It continued upward superiorly and on crossing midline ended in blind pouches near the aortocaval region, one of which was abutting the upper pole of the fused kidneys

Figure 1: Transabdominal ultrasound showed the presence of two kidneys fused at the pole on the right side and an empty left renal fossa. The fused kidneys had malrotated pelvicalyceal system forming an “S” shaped anomaly called sigmoid kidney. A grossly dilated tortuous tubular structure representing a persistent ureteric bud was seen at the base of the urinary bladder. It continued upward superiorly and on crossing midline ended in blind pouches near the aortocaval region, one of which was abutting the upper pole of the fused kidneys