2020 Volume 33 Issue 1 Pages 37-42
The extreme dilatation of obstructive ectopic ureters makes diagnosis difficult. We report a case of an obstructive ectopic ureter difficult to distinguish from an ectopic ureterocele, causing urinary tract infection due to urinary stasis. A 3-month-old girl with fever of unknown origin was admitted and found to suffer from an upper urinary tract infection. Bilateral complete duplex kidneys and ureters were detected by contrast-enhanced CT. Left upper renal ureteral meandering and dilation were observed. A scan without contrast materials showed a cystic tumor in the bladder. We assumed an upper left renal ectopic ureterocele, and attempted to perform transurethral ureterotomy. However, the intraoperative cystoscope showed no cystic mass in the bladder, and the ureter derived from the left upper kidney was found to be connected to the posterior wall of the urethra near the bladder neck. We eventually confirmed an obstructive ectopic ureter connected to the left upper kidney and performed an upper-lower left renal ureteroureteral anastomosis. She has not had urinary tract infection since the surgery. When an intravesical cystic tumor is observed, it is necessary to examine the possibility of an obstructive ectopic ureter.
