Multiple choice

Which of the following diagnostic markers is for intestinal tumor?

  1. Alpha-fetoprotein

  2. Carcinoembryonic antigen

  3. The presence of Reed-Sternberg cells

  4. EBV-related antigens

  5. Common acute lymphoblastic leukemia antigen

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carcinoembryonic antigen (CEA) is an oncofetal antigen but there is a high incidence of false positives. Reappearance of CEA after surgical removal of the primary tumor is strongly indicative of fresh tumor growth.