Abstract
The Urachal cyst which is supposed to be relatively rare has increased with the progress of imaging diagnosis. We experienced a case of infected urachal cyst. A 22-year-old man was seen at the hospital because of lower abdominal pain and high fever. A lower abdominal mass was palpated and CT scan and ultrasonography suggested an infected urachal cyst. Injection of antibiotics for seven days was ineffective and a drainage was performed. His symptoms and the inflammation dramatically improved. In this case, the cyst was not communicated with the nabel nor with the bladder, and a culture of the fluid in the cyst was negative.
