Two Cases of Bilobed Gallbladder

Abstract

Two cases of bilobed gallbladder, a rare congenital anomaly, are reported. CASE 1 : A 65-year-old man was admitted to the hospital with a gallstone and pancreatitis. Preoperative examination showed that the gallbladder had two lobes separated by a septum located in the lumen. However, this was initially diagnosed as a bent gallbladder. Laparoscopic cholecystectomy was performed. During surgery, the gallbladder was found to have a normal appearance and a single cystic duct. The resected specimen was bilobed and divided into two lobes by a septum. CASE 2 : A 67-year-old man was admitted to the hospital with gallbladder and bile duct stones with pancreatitis. Endoscopic mechanical lithotripsy was performed to remove the bile duct stones. Preoperative examination showed that the gallbladder had two lobes separated by a septum located in the lumen. From our previous experience, this was diagnosed as bilobed gallbladder. Laparoscopic cholecystectomy was performed. During surgery, the gallbladder was found to have a normal appearance and a single cystic duct. The gross and histopathological evaluation of the surgical specimen allowed us to confirm the diagnosis of a bilobed gallbladder. By knowing and understanding bilobed gallbladder, preoperative diagnosis is possible, followed by a laparoscopic approach to surgery.