Choriocarcinoma

Choriocarcinoma
Micrograph of choriocarcinoma showing both of the components necessary for the diagnosis – cytotrophoblasts and syncytiotrophoblasts. The syncytiotrophoblasts are multinucleated and have a dark staining cytoplasm. The cytotrophoblasts are mononuclear and have a pale staining cytoplasm. H&E stain.
Specialty	Oncology

Choriocarcinoma is a malignant, trophoblastic^[1] cancer, usually of the placenta. It is characterized by early hematogenous spread to the lungs. It belongs to the malignant end of the spectrum in gestational trophoblastic disease (GTD). It is also classified as a germ cell tumor and may arise in the testis or ovary.