Congenital cystic adenomatoid malformation of the lung. Prenatal diagnosis in a case

We report a case of congenital cystic adenomatoid lung malformation, type I in the Stocker classification, diagnosed at ultrasonography at 27 weeks gestation. The lesion stabilized as was the hydramnios. Vaginal delivery was uneventful. Early surgery with lobectomy led to a favorable outcome at 8 months follow-up. Congenital adenomatoid lung malformation is a rare finding. Prenatal ultrasound diagnosis has enabled early treatment and improved prognosis.