Acute cholecystitis with pericholecystic fluid seen on ultrasound

(A) Longitudinal view of the gallbladder showing small shadowing stones in the dependent part of the gallbladder (arrow). The ultrasound also shows a thickened wall in both the longitudinal projection (small arrowhead) and transverse projection (B).
(B) A small amount of pericholecystic fluid is noted (large arrowhead).
(C) The Doppler study shows an increase in blood flow to the wall (dashed arrow) reminiscent of the hyperemia of an inflammatory process. These findings are consistent with acute calculous cholecystitis.