Benign gallbladder diseases: Imaging techniques and tips for differentiating with malignant gallbladder diseases

Figure 13 Gangrenous cholecystitis. A, B: Gallbladder distension, gallstones showing posterior acoustic shadowing at the neck, and irregular mucosa detachment (arrows) on ultrasound; C, D: Arterial and portal phase computed tomography scans showing tensile gallbladder distension, diffuse mural thickening, pericholecystic fat stranding, and increased arterial enhancement of adjacent hepatic parenchyma (asterisk); irregular or partly absent gallbladder mucosal enhancement (arrows) suggesting gangrenous cholecystitis.