Primary Intraosseous Synovial Sarcoma in the Mandible

Figure 2

HE staining revealed a neoplasm composed of sheets of spindle cells arranged in bundles and exhibiting a storiform pattern (a, b). Hyalinized collagen and myxoid areas were identified in some parts of the specimen (c). The neoplastic cells were positive for AE1/AE3 (d), CK-7 (e), and CD99 (g); diffusely positive for vimentin (f) and TLE-1 (h); and negative for CD34 (i), S100 (j), SMA (k), and HHF35 (l). Scale bar:  μm and  μm.

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