Other differentials for an echogenic lung lesion in antenatal ultrasound include CCAM (congenital cystic adenomatoid malformation), lobar emphysema, bronchial atresia; all supplied by pulmonary artery.

Antenatal and postnatal findings of lower chest echogenic mass with extension below diaphragm along with blood supply from aorta favors the diagnosis of pulmonary sequestration.