Ultrasound
What sonographic sign is classic for gangrenous cholecystitis?
Intraluminal membranes, asymmetrical wall thickness, focal perfusion defects on Doppler, variable absence of the sonographic Murphy's sign
Ultrasound demonstrates gallbladder wall thickening with a "laminated" appearance, pericholecystic fluid, sonographic Murphy sign, an obstructing stone in the gallbladder neck (not shown).
Asymmetrical wall thickness with ulceration (red arrow).