PMC3565886_01
Histological stain of the left ovary with plexiform pattern of triphasic differentiation into cytotrophoblast, syncytiotrophoblast, and intermediate trophoblast and marked cytologic atypia and hemorrhage with intracytoplasmic hyaline material. Hematoxylin and eosin (H&E) stain. (a) 200x. (b) 400x.
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F1
The tumor cells were composed of cytotrophoblastic cells forming clusters of cytotrophoblast separated by streaming masses of syncytiotrophoblasts (Figure 1).