The best serologic marker of carcinoma of the colon is:
A) Alpha-fetoprotein
B) Carcinoembryonic antigen
C) Chorionic gonadotropin
D) Alkaline phosphatase
E) Acid phosphatase

Question

Quizplus · Accepted Answer

Carcinoembryonic antigen (CEA) is the best serologic marker for carcinoma of the colon. Elevated levels of CEA are found in about 70% of patients with colon cancer. Alpha-fetoprotein is more commonly associated with hepatocellular carcinoma, while chorionic gonadotropin is associated with testicular and ovarian cancers. Alkaline phosphatase and acid phosphatase are not specific to colon cancer.

The Best Serologic Marker of Carcinoma of the Colon Is