63-year-old female with rectal gist status post radiation and Gleevec There is MRI artifact limiting evaluation.PELVIS:UTERUS, ADNEXA: Status post hysterectomy.BLADDER: No significant abnormality noted.LYMPH NODES: Lymph nodes in the perirectal space, within the mesorectal fascia: None.Lymph nodes outside the mesorectal fascia: 11 mm right external iliac lymph node slightly increased in size compared to the prior exam.BOWEL, MESENTERY: Circumferential thickening of the sigmoid and rectal wall may be related to postradiation changes.Rectal Tumor:Size: 2.4 x 2.2 x 3.3 cm (image 40/series 8) previously the tumor measured 4.6 x 3.8 x 5.3 cm there is also decreased enhancement.Tumor appearance on T2-weighted images: T2 hyperintenseTumor location: Right lower rectal wall with intraluminal extension.(For lower rectal tumors):Distance of the lower edge of the tumor to the anal verge (lower edge of the anal canal): 2.0 cm.Distance of the lower edge of the tumor to the pelvic floor (relationship of the tumor to the anal sphincter complex): Abuts the right levator ani muscle.Circumference of the rectum involved: Approximately 270 degrees along the right lateral wall and posterior wall.Relationship and proximity of the tumor to adjacent structures (uterus, cervix, vagina): Not involved. Tumor Distance to Mesorectal Fascia: Minimal invasion of the right medial rectal fascia (image 42/series 8).BONES, SOFT TISSUES: Probable left S3 perineural cyst.OTHER: No significant abnormality noted.
1.Decrease in the size of the rectal mass with decreased enhancement.I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.