- Approximately 5% of cases of complete hydatidiform mole are followed by choriocarcinoma.
- Only about half the cases of choriocarcinoma arise from complete hydatidiform mole. An additional 25% of cases arise after normal pregnancies, and 25% follow spontaneous abortion or ectopic pregnancy.
- Those cases that arise after complete hydatidiform mole are nearly all cured by chemotherapy (in contrast to the others, which have a less favorable prognosis).
 Imaging Findings
- Regardless of the imaging modality used, choriocarcinoma often appears as a mass enlarging the uterus.
- Sometimes it manifests as a discrete, central, infiltrative mass.
- Its heterogeneous appearance correlates with the necrosis and hemorrhage that characterize these lesions.
 See Also
 External Links
- BJ Wagner, PJ Woodward, and GE Dickey. From the archives of the AFIP. Gestational trophoblastic disease: radiologic-pathologic correlation. RadioGraphics 1996 16: 131-148