Rare combination of familial adenomatous polyposis and gallbladder polyps

Figure 1 Diagnostic imaging results. A: Abdominal ultrasound showing an isoechoic mass in the neck of the gallbladder and multiple small polyps measuring 3-16 mm in diameter (arrows) throughout the gallbladder (a 22 mm gallbladder stone was also identified); B: CT showed a contrast-enhanced mass (arrows) in the neck of the gallbladder; C: Magnetic resonance cholangiopancreatography showed no other abnormalities of the biliary and pancreatic ductal systems.