Pulmonary sequestration presenting as a prenatally detected suprarenal lesion in a neonate

An echogenic suprarenal mass was detected antenatally in the fetus by routine ultrasound scan. Resection of the mass after delivery confirmed an extralobar pulmonary sequestration with features of a type II congenital cystic adenomatoid malformation of the lung. The lesion should be considered in all neonates presenting with a suprarenal or upper abdominal mass particularly when the mass has been detected antenatally. Ultrasound-guided needle biopsy if feasible could provide a reasonably confident diagnosis. Congenital anomalies in other organs should be looked for carefully.