Choriocarcinoma is a quick-growing form of cancer that occurs in a woman's uterus (womb). The abnormal cells start in the tissue that would normally become the placenta, the organ that develops during pregnancy to feed the fetus.
Choriocarcinoma is a type of gestational trophoblastic disease.
Choriocarcinoma is an uncommon, but very often curable cancer associated with pregnancy. A baby may or may not develop in these types of pregnancy.
The cancer may develop after a normal pregnancy; however, it is most often associated with a complete hydatidiform mole. The abnormal tissue from the mole can continue to grow even after it is removed and can turn into cancer. About half of all women with a choriocarcinoma had a hydatidiform mole, or molar pregnancy.
Choriocarcinomas may also occur after an abortion, ectopic pregnancy, or genital tumor.
A possible symptom is continued vaginal bleeding in a woman with a recent history of hydatidiform mole, abortion, or pregnancy.
Additional symptoms may include:
A pregnancy test will be positive even when you are not pregnant. Pregnancy hormone (HCG) levels will be persistently high.
A pelvic examination may reveal continued uterine swelling or a tumor.
Blood tests that may be done include:
Imaging tests that may be done include:
After an initial diagnosis, a careful history and examination are done to make sure the cancer has not spread to other organs. Chemotherapy is the main type of treatment.
A hysterectomy and radiation therapy are rarely needed.
For additional information, see cancer resources.
Most women whose cancer has not spread can be cured and will maintain reproductive function.
The condition is harder to cure if the cancer has spread and one of more of the following events occur:
Many women (about 70%) who initially have a poor outlook go into remission (a disease-free state).
A choriocarcinoma may come back after treatment, usually within several months but possibly as late as 3 years. Complications associated with chemotherapy can also occur.
Call for an appointment with your health care provider if symptoms arise within 1 year after hydatidiform mole, abortion (including miscarriage), or term pregnancy.
Careful monitoring after the removal of hydatidiform mole or termination of pregnancy can lead to early diagnosis of a choriocarcinoma, which improves outcome.
Chorioblastoma; Trophoblastic tumor; Chorioepithelioma; Gestational trophoblastic neoplasia