Surveillance Guidelines

Evaluation Recommendation Recommended Frequency
Physical exam, history, and CEA A medical history and physical examination along with the laboratory test of CEA should be performed Every 6 months for 5 years
Abdominal imaging Abdominal CT scan is preferred or US if CT is difficult to access Annually for 3 years
Pelvic imaging Pelvic CT scan is recommended if the primary tumour was located in the rectum or US if CT is difficult to access Annually for 3 years
Chest imaging Chest CT scan is recommended or CXR if CT is difficult to access Annually for 3 years
Colonoscopy

Surveillance colonoscopy is recommended

At 1 year following surgery; the frequency of subsequent surveillance colonoscopies should be dictated by the findings of the previous one, but generally should be performed every 5 years, if the findings of the previous one are normal

*Sigmoidoscopy Surveillance for rectal cancer treated without radiation Every 6 months for 5 years