A 68-year-old female, suffering from gallstones, received a laparoscopic cholecystectomy. One year later, a 4x2.5x2 cm mass was noted 3 cm left of the umbilicus. Under the impression of intraabdominal tumor, the tumor was excised and a bilioma was pathologically proved. Bilioma is an encapsulated bile fluid mass, formed after damage of the biliary tree and bile leakage. Only a few cases have been reported, but never in the periumbilical area according to review of the literature. In addition to sonography, computed tomography, and cholescintigraphy, the physicians' alertness is essential for this diagnosis. In general, the treatment of choice is percutaneous drainage. But, in this case, the bilioma of periumbilical abdominal wall was excised with good prognosis after a six-month follow-up.