1. A malignant tumor that develops from placental tissue, typically occurring after pregnancy or miscarriage.
Usage: medical term; also called gestational trophoblastic disease in some contexts

Examples

• Choriocarcinoma is a rare form of cancer that arises from cells of the placenta.
• Early detection of choriocarcinoma is important for successful treatment.
• The patient was diagnosed with choriocarcinoma following a molar pregnancy.
• Choriocarcinoma can occur weeks or months after a normal pregnancy.
• Treatment for choriocarcinoma typically involves chemotherapy.
• Women with a history of molar pregnancy have an increased risk of developing choriocarcinoma.