Abdominal cystic lymphangioma is a rare, benign, congenital tumor. It is an developmental abnormality of the lymphatic system. Males are relatively more affected and 90% of the cases are under 5 years of age. Multilocular cystic lesion with septations is seen on abdominal ultrasonography. As echogenicity can vary depending on the content of the cyst like cellular debris, hemorrhage or chylous, liquid-liquid or fat-liquid levels can be observed. Definitive treatment is total excision. Cyst aspiration is not an effective method and nearly always ends with recurrence. Computerized tomography and magnetic resonance imaging findings of sonographically detected retroperitoneal cystic lymphangioma in a newborn girl with abdominal distention are discussed in this paper.
Keywords: Retroperitoneal cystic lymphangioma, US