Management and survival in colorectal cancer are dictated by the exten
t of the disease at the initial diagnosis. Technological advances over
the past 25 years have improved the ability to accurately preoperativ
ely stage these lesions and detect recurrence. This article reviews th
e focus on the utility of computerized tomography, magnetic resonance,
endoscopic ultrasound, and newer imaging methods including PET scan a
nd monoclonal antibodies in the management of colorectal carcinoma.