Female 71 years old Reason: please assess dept of invasion of submucosal lesion History: submucosal lesion 10cm proximal to anal verge Overall image quality: ExcellentPELVIS:UTERUS, ADNEXA: Status post hysterectomy. Segments of small bowel are noted in the hysterectomy bed. BLADDER: Partially distended urinary bladder without significant abnormality.LYMPH NODES: The patient has a large amount of pelvic fat. The mesorectal fascia is poorly defined.Nonspecific lymph node measuring 4 mm in short axis (series 601/42) at the 10:00 position approximately 2.4 cm from the rectum at this level.BOWEL, MESENTERY: Rectal Tumor:Size: 3.9 x 4.1 x 3.9 cm (image 601/46, series 801/33)Tumor appearance on T2-weighted images: T2 hyperintense. Peripherally enhancing. There is a large submucosal component of the tumor. The overlying mucosa is hyperenhancing (series 1303/453). The serosal surface around the tumor is poorly defined along its right lateral margin.Tumor location: (For lower rectal tumors):Distance of the lower edge of the tumor to the anal verge (lower edge of the anal canal): 8.3 cmDistance of the lower edge of the tumor to the pelvic floor (relationship of the tumor to the anal sphincter complex): Approximately 5 cmCircumference of the rectum involved: Approximately 180 degrees.Relationship and proximity of the tumor to adjacent structures (uterus, cervix, vagina): The patient is status post hysterectomy. No evidence of uterine or vaginal invasion.MRI T-stage: T3. There is disruption of the serosal surface surrounding the tumor consistent with perirectal fat invasion, however the exact extent of invasion is difficult to measure given the poorly defined serosal surface. Tumor Distance to Mesorectal Fascia: The mesorectal fascia is poorly defined.BONES, SOFT TISSUES: The tumor appears to abut the anterior sacral cortex at S3-4. No frank bone invasion.OTHER: Postsurgical changes from lumbar spinal fusion partially imaged.
T2-hyperintense rectal mass consistent with patient's known mucinous carcinoma with suspected perirectal fat invasion. 