MSFinals-0551

A 65-year-old individual has recently undergone anterior resection for a rectal mass. The histology report indicates that the adenocarcinoma is moderately differentiated and has invaded into the muscle, but not through the wall. One of the 13 lymph nodes examined has been found to be involved by metastatic tumour, but the high tie node is free of tumour. A liver biopsy from a suspicious lesion in the liver has shown ‘no evidence of malignancy’. Can you determine the stage of this patient’s cancer?