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Two different patients with invasion and mass effect on the rectum by adjacent tumors. a. 43-year-old female presenting to the emergency care center with right abdominal pain. Large circumferential cervical mass obliterates the rectovaginal tissue plane (arrows) on CT. b. Axial T1 enhanced MR of a 2-year-old female with a large sacrococcygeal teratoma filling the ischiorectal fossae and obscuring the dorsal anorectal wall (arrow).
