A Case of Buccal Clear Cell Carcinoma Caused by Rare Fusion Gene: EWSR1-CREM

Figure 2

Microscopic and survey view of the surgical resected specimen. (a) Resected specimen measuring . (b, c) The tumor demonstrated proliferation of tumor nests with a fibrous stroma. There was no capsule and no contact with the covering epithelium. (d) The tumor had invaded into surrounding muscle and adipose tissues. (e, f) The tumor nests were composed of epithelioid and clear cells partially surrounded by hyalinized stroma. Features suggestive of transition between the two cell types were observed (HE; original magnification: (b) ×1, (c) ×20, (d, f) ×40, and (e) ×100).

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