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What is the most sensitive imaging study to detect colorectal cancer in the setting of a negative routine CT study and rising carcinoembryonic antigen (CEA) levels?
18 F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT).
What is the frequency of primary colonic lymphoma?
0.4% of all colorectal malignancies.
What are the most common locations of colonic lymphoma?
The cecum and the rectum.
