Inclusion Criteria:  Patients >18 years with histopathologically confirmed adenocarcinoma of the rectum, defined as tumor ≤15cm from the anal verge who are planned for RP ± neoadjuvant treatment or WW (CRT alone without surgery).  Exclusion Criteria:  Metastatic disease at diagnosis; Planned for abdominoperineal resection (APR), low Hartmann's or pelvic exenteration (PE); Cannot be contacted by telephone; Unable to read and comprehend English or French; Unable to give clear and informed consent.