Ovarian Solid Pseudopapillary Tumor Resembling Benign Hemorrhagic Cyst on Rapid Frozen Section

Figure 3

(a) Pseudopapillary growth pattern characteristic of solid pseudopapillary tumors (magnification ×100, H&E). (b) Another view of pseudopapillary growth pattern characteristic of solid pseudopapillary tumors (magnification ×100, H&E). (c) Tumor cells with characteristic eccentric nuclei and extracellular eosinophilic hyaline globules (magnification ×200, H&E). (d) β-catenin immunohistochemical staining shows nuclear and cytoplasmic positive staining (magnification ×100, β-catenin).

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