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Fig. 5.13 Clear cell carcinoma. A Polygonal cells with nonstaining cytoplasm and absence of ductal lumens characterize clear cell carcinoma. B This example is composed of a mostly solid sheet of tumour cells with little stroma.

Clear cell carcinoma, not otherwise specified 227

Fig. 5.14 Clear cell carcinoma. A Infiltration into adjacent lobules of normal parotid gland. B Clear cell carcinoma of the lip infiltrating skeletal muscle (top) and surrounding a peripheral nerve (lower centre). C PAS staining demonstrates a prominent cytoplasmic glycogen content. D Clear cell carcinoma of the parotid gland. Prominent hyalinized stroma separates nests of tumour cells.

Fig. 5.14 Clear cell carcinoma. A Infiltration into adjacent lobules of normal parotid gland. B Clear cell carcinoma of the lip infiltrating skeletal muscle (top) and surrounding a peripheral nerve (lower centre). C PAS staining demonstrates a prominent cytoplasmic glycogen content. D Clear cell carcinoma of the parotid gland. Prominent hyalinized stroma separates nests of tumour cells.

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