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

Figure 3

Special stains: (a) PAS, (b) d-PAS, (c) mucicarmine, and (d) Alcian blue. PAS stain shows positive cytoplasmic red material in the clear cells, but PAS with diastase stain was negative, suggesting the presence of glycogen. The contents of duct-like structures were positively stained by mucicarmine and Alcian blue, but mucus-producing cells were not evident in the tumor nests ((a–d) original magnification ×200).

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