Radiology has become an increasingly important part of today’s multi-disciplinary approach to managing cancer. Optimal treatment decisions are based on knowledge of tumour characteristics and, in particular, identifying prognostic features early in diagnosis. In rectal cancer, many of these prognostic features can be identified using a combination of MRI, EAUS and CT. Such factors include pathological involvement of the circumferential resection margin (CRM), height of the tumour from the anal verge, extramural venous invasion and T-staging of the tumour in addition to the presence of distant metastases. Treatment decisions must aim to deal with the immediate threat of cancer and also reduce the risk of future local or distant recurrence. By identifying these factors at an early stage in the patient’s treatment pathway using appropriate imaging techniques, selective neo-adjuvant therapy can be given to improve overall outcomes.
Rectal Cancer Total Mesorectal Excision Bowel Wall Anal Verge Transanal Endoscopic Microsurgery
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