Certified Tumor Registrar (CTR) Practice Exam

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Carcinoembryonic antigen (CEA) is used for which cancer?

Breast cancer
Colon cancer
Lung cancer
Prostate cancer

The correct answer is: Colon cancer

Carcinoembryonic antigen (CEA) is a tumor marker primarily associated with colon cancer. It is a glycoprotein that may be present at elevated levels in the blood of individuals with certain types of cancers, most notably colorectal cancer. While CEA can sometimes be elevated in other conditions, including some benign diseases and other cancers, its most significant association is with colorectal malignancies. In clinical practice, CEA testing is often used to monitor treatment response and recurrence in patients who have been diagnosed with colon cancer. As such, the use of CEA as a tumor marker is particularly relevant and valuable in the context of colon cancer diagnosis and management.