Fig. 3From: Early surgical intervention for patients with possible clinically silent somatotroph adenoma: a case seriesPatient 3. a Preoperative T1-weighted magnetic resonance (MR) image with gadolinium showing a sellar mass lesion. b Postoperative T1-weighted MR image showing no residual tumor. c H&E staining (× 40 magnification) showing sheet-like proliferation of monomorphic round cells. d Immunohistochemical staining for growth hormone showing diffuse reactivity (× 40 magnification)Back to article page