Perineal lipoma and penoscrotal transposition with anal agenesis: Does the mass impede the descent of the bowel?

Abstract

Transposition of the male external genitalia, full development of the scrotum in a position entirely anterior to the penis, is a rare abnormality. The high association of perineal lipoma and accessory labioscrotal folds suggests its development as a consequence of intervening mesenchymal tissue (the developing lipoma). We therefore suggest its priority as the cause of anal agenesis. Here we are presenting a patient with anal atresia, hypospadias, penoscrotal transposition, bifid scrotum, urethral sinus and perineal lipoma.