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  Indian J Med Microbiol
 

Figure 2: (a) Trans-sphenoidal resection of pituitary mass. Solid nests of cells with abundant clear cytoplasm and focal formation of gland-like structures with eosinophilic cytoplasm (H and E, magnification × 60), (b) Trans-sphenoidal resection of pituitary mass. Immunohistochemistry stain highlights the expression and nuclear localization of TTF-1 in the neoplastic cells, which supports the diagnosis of metastatic lung adenocarcinoma (TTF-1 IHC, magnification × 20)

Figure 2: (a) Trans-sphenoidal resection of pituitary mass. Solid nests of cells with abundant clear cytoplasm and focal formation of gland-like structures with eosinophilic cytoplasm (H and E, magnification × 60), (b) Trans-sphenoidal resection of pituitary mass. Immunohistochemistry stain highlights the expression and nuclear localization of TTF-1 in the neoplastic cells, which supports the diagnosis of metastatic lung adenocarcinoma (TTF-1 IHC, magnification × 20)