title: Ultrasound demonstration of an infected urachal cyst.
abstract: A 5-year-old child presented with a recurrent infraumbilical abdominal mass. Clinical and sonographic diagnosis was consistent with an infected urachal cyst. The clinical features and sonographic differential diagnosis are discussed.
mesh_terms: D002648:Child; D005260:Female; D006801:Humans; D013203:Staphylococcal Infections / Q000175:diagnosis*; D014463:Ultrasonography; D014496:Urachal Cyst / Q000175:diagnosis*