History of rectal cancer. Also history of gallbladder adenocarcinoma on cholecystectomy pathology.Rectal tumor demonstrated invasive moderately differentiated adenocarcinoma. No regional lymphadenopathy on pathology report. PELVIS:PROSTATE/SEMINAL VESICLES: Heterogeneous mildly enlarged prostate.BLADDER: No significant abnormality noted.LYMPH NODES: The perirectal space lymph nodes remain markedly decreased in size from the initial study without measurable lymph node enlargement, unchanged.The referenced lymph node at the level of the rectosigmoid junction on the left measures 6 x 3 mm (series 4/5), compared to 8 x 5 mm previously.BOWEL, MESENTERY: In the location of the original solid rectal lesion again seen is a predominantly markedly low T2 weighted focus affecting the left posterolateral aspect of the rectum (series 4/25) measuring up to 1.6 x 0.9 cm (series 4/25), not significantly changed accounting for differences in measurement technique. There is no evidence of extramural extension. No significant restricted diffusion or appreciable postcontrast enhancement is evident.Sigmoid diverticulosis is noted.BONES, SOFT TISSUES: Minimal presacral soft tissue stranding and minimal fluid is likely treatment related.OTHER: No significant abnormality noted.
Stable post-treatment appearance of the rectal mass with imaging characteristics suggestive of post-radiation scar tissue without residual restricted diffusion or appreciable post-contrast enhancement. Interval mild decrease in reference pelvic lymph node. No measurable perirectal lymphadenopathy, similar to the prior and markedly improved from the initial staging examination. 