Abstract
A 68-year-old man presented with lower abdominal pain and fever was referred to our hospital. Abdominal computed tomography scan showed a mass suggestive of a urachal abscess, which continued from the navel to the bladder. Further examination revealed a fistula between the urachal cyst and the small intestine. He was therefore diagnosed as having an infected urachal cyst infiltrating to the ileum, and underwent operation. Surgical findings showed the urachal abscess firmly adhered to the small intestine 90 cm from the ileum end, which appeared to be the fistula. En bloc resection of the umbilicus, the infected urachal cyst and the ileum by approximately 15 cm in length was performed. The pathological findings were consistent with urachal abscess rupturing to the perineal cavity causing adhesion to the adjacent small intestine, and forming an entero-urachal fistula. The postoperative course was good and the patient was discharged 15 days after the surgery. This report describes a very rare case of a urachal abscess which penetrated to the small intestine, with a review of the literature.
