Mucinous adenocarcinoma of the rectum with Psammomatous calcifications

Marked asymmetric circumferential mural thickening of the rectum extending caudally to involve the proximal anal canal across the anorectal junction, over an approximate length of 12 cm and maximum thickness of 3.4 cm at the anterior wall, demonstrating predominant low attenuation areas in the submucosal space associated with numerous tiny psamomatous calcifications – of concern for rectal carcinoma, likely mucinous adenocarcinoma of the rectum with psamomatous calcifications

Evidence of early transmural infiltration of the muscularis propria involving the mesorectal space predominantly on the left.

Rest of mesorectal space is clear. The mesorectal fascia (CRM) appears normal.

No evidence of significant perirectal or pelvic lymphadenopathy.

No CT evidence of large bowel obstruction in this study. No evidence of fistula formation. No evidence of free fluid.