Urororectal Septum Malformation Sequence: A Case Report

Urororectal Septum Malformation Sequence: A Case Report

Urorectal septum malformation sequence (URSMS) is a rare genetic anomaly characterized by severe abnormalities of the urorectal septum and the urogenital organs. URSMS is a sporadic condition, in which a deficiency in caudal mesoderm appears to be the primary cause of the malformation of the urorectal septum and other pelvic structures. A review of the literature reveals several clinical reports which discuss prenatal ultrasound findings. We highlight a case of URSMS that presented with ruptured bladder with abdominal ascites and oligohydramnios on prenatal ultrasounds. Fetal MRI was able to further delineate the findings associated with URSMS along with prune belly syndrome in a female neonate. We will discuss the prenatal findings on ultrasound and how MRI can assist with diagnosis of URSMS.