Uretero-Infundibuloplasty for Giant Hydronephrosis

A large cystic abdominal mass was identified on a prenatal ultrasound in a 37 gestational week female fetus. Antenatal fluid aspiration from the cyst was consistent with fetal urine. The cyst fluid rapidly reaccumulated, prompting induction of labor. Following vaginal delivery, radiographic evaluation revealed giant hydronephrosis with ureteropelvic junction (UPJ) obstruction. This anomaly was associated with a unusual variation of intrarenal anatomy, which prevented classic dismembered pyeloplasty. We report a case of in-utero detected giant UPJ obstruction and the unique reconstruction utilizing the concept of dismembered ureteroinfundibuloplasty. DOMAIN: urology