Dumbbell Gallbladder Diagnosed by ERCP

A 76-year-old woman presented with a 3-year history of intermittent and worsening right upper quadrant abdominal pain. The abdominal pain was not associated with nausea or vomiting, and did not get worse with food intake. Laboratory results were normal. Abdominal computed tomography (CT) showed a 2.3 x 1.9-cm fluid-filled lesion of the biliary system consistent with a type II choledochal cyst, accessory gallbladder, or gallbladder diverticulum (Figure 1). A magnetic resonance cholangiopancreatography (MRCP) was consistent with a type II choledochal cyst (Figure 2). Endoscopic retrograde cholangiopancreatography (ERCP) with cholangiogram confirmed gallbladder stricture (Figure 3). Subsequently, laparoscopic cholecystectomy and pathology also confirmed a gallbladder stricture (Figure 4). Postoperatively, the patient's symptoms resolved.