Torsion of an accessory lobe of the liver in a child: report of a case.

We report a case of torsion of an accessory lobe of the liver (ALL) in a 14-year-old girl. The patient was admitted for acute abdominal pain and laparotomy revealed an ALL, the pedicle of which was elongated with 180 degrees torsion. The diagnosis was not made preoperatively because of the rarity of this condition. However, a close relationship between omphalocele repair and the development of ALL has been reported; thus, a history of omphalocele repair should alert the doctor to the possibility of this condition, which could be suggested by imaging findings preoperatively. Torsion of an ALL should be included in the differential diagnosis of a patient with a history of omphalocele, who presents with acute abdominal symptoms.