Cholelithiasis in the accessory gallbladder of an accessory liver.

We report a case of a 16-year-old girl with cholelithiasis in the accessory gallbladder of an accessory liver. A parenchymal cyst was also present in the accessory liver. The accessory lobe of the liver is a rare congenital anomaly with supernumerary liver lobes caused by hyperplasia of the hepatic diverticulum in early fetal life. The presence of an accessory gallbladder is scarce. To our knowledge, this case is the first reported with cholelithiasis in the only gallbladder of the patient located in the accessory liver. This case reiterates the importance of familiarity of radiologists with this congenital anomaly, accessory liver and gallbladder, which may also lead to complications.