Fetal inguinoscrotal hernia: sonographic diagnosis and obstetric management.

Fetal inguinal hernia is a rare antenatal diagnosis. We present the sonographic features and outcome of a fetus diagnosed at 36 weeks' gestation as having an (indirect) inguinoscrotal hernia. Sonographic criteria for antenatal diagnosis are discussed within the context of differential diagnoses raised by the presence of a perineal mass. Guidelines for obstetric management and counselling are suggested.