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A, Axial contrast-enhanced CT image in a 47-year-old woman showing a large pelvic sidewall recurrence (asterisk) of colonic adenocarcinoma. B, Sagittal reformatted contrast-enhanced CT image after treatment with 16 cycles of FOLFIRI (folinic acid, 5-fluorouracil, and irinotecan) and bevacizumab shows a fistula (arrow) between the shrunken tumor mass and the colon (C).
