Rectal cancer staging post radiation treatment. PELVIS:UTERUS, ADNEXA: Status post hysterectomy.BLADDER: Partially distended urinary bladder without a focal abnormality.LYMPH NODES: The reference lymph node in the mesorectal fat adjacent to the left aspect of the upper rectum measures 4 x 4 mm (series 3/19) compared to 1.0 x 0.9 cm previously. No additional prominent lymphadenopathy.BOWEL, MESENTERY: Corresponding to the site of the previously seen upper rectal tumor there is a region of intermediate T2 weighted hypointensity (series 4/29) which likely predominantly represents collapsed mildly edematous bowel has there are additional regions of similar signal intensity throughout the rectosigmoid. This is associated with minimal restricted diffusion and postcontrast enhancement. No proximal obstructive dilatation. Sigmoid diverticulosis.BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
Residual intermediate T2 weighted hypointensity at the site of the previously characterized upper rectal tumor is likely predominantly collapsed mildly edematous bowel associated with mild restricted diffusion and postcontrast enhancement without a measurable discrete lesion, compatible with near complete treatment response. Residual 4 mm left mesorectal lymph node, significantly decreased from prior.