Nonfunctioning Pituitary Adenoma That Changed to a Functional Gonadotropinoma

<div>Micrography of immunohistochemistry staining with Streptavidina-Biotine technique revealed with diaminobenzidine. (a) Nuclear expression of SF-1 in the first surgery ((a), arrows). (b) Intense positivity for the FSH hormone in the second surgery ((b), arrows) (×400).</div>

Case Reports in Endocrinology

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Figure 4

Figure 4: Nonfunctioning Pituitary Adenoma That Changed to a Functional Gonadotropinoma 