Prenatal Diagnosis and Postnatal Management of Congenital Cervicofacial Cystic Lymphangioma Associated With Multiple Fetal Anomalies: A Case Report.

Cystic lymphangioma is a rare benign congenital malformation of the lymphatic system resulting from abnormal embryologic development of lymphatic vessels. The cervicofacial region represents the most common localization. Prenatal ultrasound plays a key role in early diagnosis and follow-up. We report the case of a 30-year-old gravida 2 para 1 woman with a pregnancy complicated by primary cytomegalovirus (CMV) infection during the first trimester and multiple fetal anomalies identified on antenatal ultrasound, including ventriculomegaly, cerebellar hypoplasia, abnormal cerebral gyration, cardiomegaly, and cystic hygroma. The pregnancy was followed up with serial ultrasounds until term. Vaginal delivery occurred at 39 weeks of gestation without maternal complications. The neonate presented with a cervicofacial cystic mass and was referred for pediatric surgical management. Histopathological examination after surgical excision confirmed the diagnosis of cystic lymphangioma. This case highlights the importance of prenatal imaging in the diagnosis and multidisciplinary management of congenital lymphatic malformations.