GlossarySee Full Entry

Choriocarcinoma: A malignant, fast-growing tumor that develops from trophoblastic cells (cells that help an embryo attach to the uterus and help form the placenta). Almost all choriocarcinomas form in the uterus after fertilization of an egg by a sperm, but a small number form in a testis or an ovary. Choriocarcinomas spread through the blood to other organs, especially the lungs. A type of gestational trophoblastic disease.

Alternate Names
Chorionic carcinoma
9100/3 Choriocarcinoma, NOS
9101/3 Choriocarcinoma combined with other germ cell elements