Pituitary Metastatic Composite Tumors: A Case Report with Next-Generation Sequencing and Review of the Literature

Figure 4

Histopathologic stains of the pituitary mass. (a) H and E stain of the pituitary lesion. (b) Magnified image of red box in a showing evidence of pituitary adenoma which is surrounded by clear cells that resemble RCC but without the nuclear changes. (c) Magnified image of blue box in (a) showing clear cytoplasm arranged in nests with severe nuclear atypia consistent with WHO/ISUP grade 3 RCC.

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(b)

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