CDC73 and tumor of parathyroid gland: In particular, distinguishing between atypical parathyroid tumors (known as parathyroid neoplasms of uncertain malignant potential) and parathyroid carcinoma remains a major problem because of the ambiguous shared features observed through histological examination as well as technical difficulties in performing and interpreting relevant tests (e.g., parafibromin immunohistochemistry)6,7.