Fig. 3
From: Sellar germinoma mimicking IgG4-related hypophysitis: a case report
Histopathology of the pituitary lesion. A HE staining shows scattered large tumor cells with round nuclei and prominent nucleoli, and dense lymphoplasmacytic infiltration. B Immunohistochemistry staining for CD117 (a marker of germinoma) is positive in tumor cells. C Immunohistochemistry staining for IgG4. D Immunohistochemistry staining for CD38 (a marker of plasma cells)