Figure 3.

A. Mediastinal choriocarcinoma: Diffuse sheets of cytotrophblastic and syncytiotrophoblastic cells. Hemorrhagic and necrotic locations are also seen. (medium power magnification) B. Tumor cells with diffuse positive cytoplasmic immunostaining for β-hCG.(High power magnification).

Mountzios et al. BMC Clinical Pathology 2006 6:8   doi:10.1186/1472-6890-6-8
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