Fig. 7From: A rare combination of tumor-induced osteomalacia caused by sinonasal glomangiopericytoma and coexisting parathyroid adenoma: case report and literature reviewHistological sections of hematoxylin and eosin staining showing parathyroid adenoma characterized by a solid growth pattern, surrounded by a thin capsule, well demarcated from other tissues. At the periphery a rim of compressed normal parathyroid tissue admixed with fat cells is seen (a, b). Immunohistochemically, parathyroid adenoma stains intensely positive for chromogranin A (c)Back to article page