Fig. 17From: Gallstones top to toe: what the radiologist needs to knowa Sagittal ultrasound of a distended gallbladder with an impacted stone in the gallbladder neck. Mild associated gallbladder wall thickening. b Axial contrast-enhanced CT of the abdomen in the same patient, again demonstrating a distended gallbladder with an impacted hyperattenuating stone in the gallbladder neck. There is subtle associated fat stranding. Findings are consistent with a gallbladder mucocoele. The gallbladder wall thickening and fat stranding are suggestive of possible empyemaBack to article page