Early Prenatal Diagnosis of Isolated Anal Atresia via Ultrasound and Fetal MRI

Anal atresia is a rare often, devastating malformation. This abnormality is most commonly associated with Vactrel syndrome and occasionally as an isolated malformation. Prenatal diagnosis is uncommon until late into the third trimester and most frequently diagnosed after birth. We describe a method of earlier detection and confirmation in the second trimester and review diagnosis and management. Early diagnosis is crucial to allow families to make management decisions and plan for delivery.