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    Description

    People with bowel (colorectal) cancer can have surgery to remove the tumour. If the tumour has spread to nearby tissues (locally advanced) or if a tumour that was treated has come back in the same place (locally recurrent), surgery sometimes cannot remove all of the cancer. In this procedure, electron beam radiation is delivered directly to the tumour during the surgery to remove it (intraoperative). Because the radiation delivered in this procedure is precisely targeted to the tumour, it can be a higher dose than normal radiotherapy. The aim is to remove any remaining cancer cells, stop the cancer from coming back and stop it from spreading further.