All patients with recurrent colorectal cancer in the pelvis are eligible. The original primary tumour staging scans and resected surgical specimen needs to be available. Patients' recurrence will be staged using our proposed MRI classification. We will be assessing the original primary staging scans and histopathology to learn about risk factors for recurrence. We will record treatment for the recurrence, and patients will be followed up for three years.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
To change R0 resection rates for locally recurrent rectal cancers with the use of the proposed staging system.
Timeframe: 3 years