What is the major complication of acute gangrenous and emphysematous cholecystitis?
The major complication is gallbladder perforation, which most commonly occurs through the gallbladder fundus.
On CT and MRI, a focal gallbladder wall defect, gallbladder contour irregularity, extraluminal gallstones, or a pericholecystic abscess may be seen. Other imaging findings may include bile peritonitis, pneumoperitoneum, fistula formation to an adjacent bowel loop, small bowel obstruction, and abdominal abscess formation.