A retrocaval ureter, which was also known as circumcaval ureter, it was an abnormal development of Vena cava & ureter. It was a rare congenital malformation of right human ureter, where the ureter will passes behind the inferior vena cava, by causing compression possibly leading to hydronephrosis. The prevalence of this type of condition was nearly 1 per 1,000 persons, with males 2-3 times more likely than females to develop this condition. Symptoms usually do not manifest till 20’s or 30’s.
The ureter will lies in between the following fetal veins: dorsally the supracardinal vein & posterior cardinal vein, ventrally the subcardinal vein. Generally, the portion kaudal of the renal vein of inferior vena cava will develops from the right supracardinal vein & the ureter lies anterior to the inferior vena cava. If subcardinal vein persists, the inferior vena cava will develops ventral of ureter & can cause hydronephrosis by compression in between vena cava and spine. Loss of right-sided kidney function was possible.
Right- sided flank pain, pyelonephritis, nephrolithiasis. Surgical treatment procedure was essential in the complications, like intermittent flank pain, recurrent infections or nephrolithiasis. Operation will consists of the division of the ureter, reanastomosis and spatulation ventral of the vena cava (ureteroureterostomy). In the case of a solitary kidney related with a retrocaval ureter, dissection & anastomosis of the vena cava was been reported, to enable repositioning of ureter without ureteroureterostomy.