[A case of a urachal sinus with umbilical infection].

A case of the urachal sinus accompanied by umbilical infection is reported. A 21-day-old female infant was seen at the hospital because of umbilical granuloma, redness and umbilical purulent discharge. The separation of the umbilical cord in her neonate was delayed. IVP and CT examination revealed a urachal diverticulum from the urinary bladder to the umbilicus. The patient was diagnosed to have internal and external urachal sinus. In spite of systemic administration of antibiotic agents, the umbilical infection did not get well. After extruding of the external urachal sinus from the umbilicus, she had not had any symptoms. After 3 months the IVP did not revealed in urachal diverticulum.