AFP and hCG elevations occur in which conditions?

AFP and hCG elevations occur in which conditions?

• A. Pregnancy
• B. Ovarian germ cell carcinoma
• C. Nonseminomatous testicular cancer
• D. All of the above

Answer: (D)

AFP and hCG are tied to tissues with fetal or placental origin, so they can be elevated in conditions involving those tissues. AFP is produced by the fetal liver and yolk sac, and in pregnancy the maternal serum AFP rises as part of normal development (and is also used for screening certain fetal conditions). hCG is produced by placental trophoblasts, and its levels are high in early pregnancy. Germ cell tumors of the ovary or testis can mimic fetal tissues. Yolk sac tumors strongly raise AFP, while choriocarcinoma components raise hCG. Mixed germ cell tumors can elevate one or both markers depending on the histology. So elevations of both AFP and hCG can occur in pregnancy, ovarian germ cell tumors, and nonseminomatous testicular cancers, making all of the above a correct overall pattern.

AFP and hCG are tied to tissues with fetal or placental origin, so they can be elevated in conditions involving those tissues. AFP is produced by the fetal liver and yolk sac, and in pregnancy the maternal serum AFP rises as part of normal development (and is also used for screening certain fetal conditions). hCG is produced by placental trophoblasts, and its levels are high in early pregnancy.

Germ cell tumors of the ovary or testis can mimic fetal tissues. Yolk sac tumors strongly raise AFP, while choriocarcinoma components raise hCG. Mixed germ cell tumors can elevate one or both markers depending on the histology.

So elevations of both AFP and hCG can occur in pregnancy, ovarian germ cell tumors, and nonseminomatous testicular cancers, making all of the above a correct overall pattern.