Click on image to view larger version.
Figure 11. Intra-abdominal abscesses. 32-year-old man with a 1-week history of diffuse abdominal pain, distension and vomiting. CT with intravenous contrast medium shows a large abscess collection with an enhancing wall in the rectovesical pouch, containing small locules of gas (arrow) (r, rectum; b, bladder). There were further collections posterior to the ascending colon and caecum, and anterior to the sigmoid colon (not shown). The walls of the caecum and the proximal ascending colon were also thickened, but the appendix was not identified at CT. Surgery revealed a perforated appendix and confirmed the large pelvic collection.
