Hydronephrosis caused by herniation of ureter through psoas muscle fascia: Case report and review of literature.

The herniation of ureter is rare. A 59-year-old woman with hydronephrosis caused by herniation of ureter through psoas muscle fascia was observed. The patient referred to our clinic with four weeks' history of left flank pain and fever. Computed tomography urography and antegrade combined with retrograde urography revealed tortuous and proximal dilated ureter and hydronephrosis on the left side. Herniation of ureter through psoas muscle fascia was confirmed in operation and laparoscopic ureteroplasty with end to end anastomosis was done. No obvious hydronephrosis or flank pain was observed in follow-up for one and a half year.