Prenatal Anhydramnios in a Girl: An Exceptional Case of Obstruction by Bilateral Ectopic Ureter

The presence of posterior urethral valves as a cause of oligoamnios is well known. Differential diagnosis should be established with other pathologies such as prune-belly syndrome, high-grade vesicoureteral reflux, bilateral obstructive megaureter, urethral atresia, obstruction of the anterior urethra, ureteroceles and less frequently the presence of an obstructed bilateral ectopic system [1]. The ectopic ureter is more frequent in girls, associated with a duplicated renoureteral system and rarely associated with bilateral obstruction of the urinary tract. We present an exceptional case of anhydramnios in a female fetus secondary to obstruction of a bilateral ectopic ureter and a duplicated left system with severe worsening of renal function.