Patient c4; first CT of the pelvis, 1 day prior to first histology of malignancy: Suspicion of a large, abscess forming inflammatory lesion pararectally with air entrapments and therefore suspicious of a connection to the rectum. No evidence of fistula. Diffuse inflammatory swelling of the gluteal muscles and the subcutaneous tissue at right gluteus. Pathologically enlarged lymph nodes in the ischiorectal fossa and presacral