Posttraumatic torsion of accessory lobe of the liver and the gallbladder

Torsion of an accessory lobe of the liver and of the gallbladder is a rare etiology for acute abdominal pain in children and infants. We report a case of an 8-year-old girl who was admitted with acute epigastric pain and vomi ting, after her brother had jumped on her back. Physical examination reveal ed an afebrile child with a nontender right upper quadrant (RUQ) mass. Colo r Doppler ultrasound and contrast-enhanced CT demonstrated a heterogeneous, avascular mass with displacement of a thickened-wall gallbladder. A torted , congested accessory lobe of the liver and the gallbladder were resected a t laparotomy. Imaging and operative findings are presented and a differenti al diagnosis is discussed in order to increase awareness of this rare condi tion.