How do you manage colorectal tumors that have components in the colon and rectum on MRI?

For a tumor straddling the peritoneal reflection, it is only the rectal component that would make one consider RT. The reason for a local recurrence of rectal cancer is residual disease from the primary tumor either at the margin of resection of the primary tumor or from residual lymph nodes in the ...

Like rectal cancer. Preop RT chemo and surgery.

Omission of preoperative RT is conditionally recommended in selected patients with lower risk of locoregional recurrence.