Alpha-fetoprotein is least likely to be found in which condition?

Alpha-fetoprotein is least likely to be found in which condition?

• A. Pregnancy
• B. Hepatocellular carcinoma
• C. Breast carcinoma
• D. Cirrhosis

Answer: (C)

Alpha-fetoprotein is a protein produced by the fetus (primarily from the liver and yolk sac). In adults, AFP rises most often with conditions related to the liver or germ cell tumors, and it can be elevated in pregnancy because the fetus makes AFP that crosses into maternal blood. Cirrhosis can cause mild AFP elevation due to liver regeneration. Breast tissue does not produce AFP, so breast carcinoma is not expected to raise AFP levels. That’s why this condition is the least likely to have elevated AFP compared with the others.

Alpha-fetoprotein is a protein produced by the fetus (primarily from the liver and yolk sac). In adults, AFP rises most often with conditions related to the liver or germ cell tumors, and it can be elevated in pregnancy because the fetus makes AFP that crosses into maternal blood. Cirrhosis can cause mild AFP elevation due to liver regeneration. Breast tissue does not produce AFP, so breast carcinoma is not expected to raise AFP levels. That’s why this condition is the least likely to have elevated AFP compared with the others.