PRENATAL ULTRASOUND FINDINGS OF LINEAR NEVUS SEBACEOUS AND ITS ASSOCIATION WITH CYSTIC ADENOMATOID MALFORMATION OF THE LUNG

Background: Nevus sebaceous is a congenital hamartomatous skin lesion that is commonly associated with other abnormalities and is most frequ ently located on the face and head. To our knowledge, there are no pre vious reports of the ultrasonographic appearance of nevus sebaceous or of an association with cystic adenomatoid malformation of the lung. C ase: A patient was referred at 25 weeks' gestation with multiple fetal anomalies, including echogenic soft-tissue structures external to the cranium and face, a large right-side intrathoracic mass, and abdomina l ascites. After a preterm delivery, nevus sebaceous and a congenital cystic adenomatoid malformation of the lung were diagnosed. Neonatal d eath occurred secondary to pulmonary hypoplasia. Conclusion: Nevus seb aceous should be considered in the differential diagnosis when echogen ic soft-tissue structures are seen on prenatal ultrasound. A detailed ultrasound examination is warranted to rule out other associated abnor malities.