Nonfunctional Metastatic Parathyroid Carcinoma in the Setting of Multiple Endocrine Neoplasia Type 2A Syndrome

<table>Tissue sample. The microscopic examination of the nodular lesion shows parathyroid chief cells in trabecular, infiltrative pattern with fibrotic septae and vascular invasion. Immunohistochemical analysis revealed a nuclear overexpression of cyclin D1. Cyclin D1 stains the nuclei blue.</table>

Surgery Research and Practice

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Figure 3

Figure 3: Nonfunctional Metastatic Parathyroid Carcinoma in the Setting of Multiple Endocrine Neoplasia Type 2A Syndrome 