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Parafibromin, Galectin-3, PGP9.5, Ki67, and Cyclin D1: Using an Immunohistochemical Panel to Aid in the Diagnosis of Parathyroid Cancer

Lookup NU author(s): Dr Sarah Johnson, Richard Bliss, Professor Thomas Lennard, Sebastian Aspinall


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Parathyroid cancer is rare. Differentiating parathyroid carcinoma from degenerative changes at histopathology can be difficult and studies investigating the value of single immunohistochemical markers have had variable results. In this study we aimed to investigate whether a panel of immunohistochemistry markers could aid the diagnosis of parathyroid cancer.All cases of parathyroid cancer at our institution from 1998 to 2012 were identified retrospectively. Cases were classified as definite cancers (those with evidence of metastatic spread) or histological cancers (those with features of carcinoma without evidence of metastasis). Controls with benign parathyroid disease were included for comparison. Immunohistochemistry for parafibromin, galectin-3, PGP9.5, Ki67, and cyclin D1 was analysed by an experienced endocrine pathologist.There were 24 cases and 14 benign adenomas. Four cases had evidence of metastatic spread and 20 were diagnosed on histological criteria alone. Sixteen of the 24 cases had further surgery with ipsilateral thyroid lobectomy and 15 also had a prophylactic level VI lymph node dissection. Apart from one patient with distant metastases at presentation, none developed recurrence at follow-up (median = 38 months). Immunohistochemistry results associated with parathyroid cancer were seen in 11/24 parafibromin, 13/24 galectin-3, 8/24 PGP9.5, 5/24 Ki67, and 2/24 cyclin D1. None of the controls had immunohistochemical staining suggestive of cancer. Nineteen of the 24 patients had at least one immunohistochemical result associated with parathyroid cancer (sensitivity 79 %, specificity 100 %). Cyclin D1 did not suggest malignancy in any case that did not already have another abnormal marker, and so did not add value to the panel in this study.A panel of immunohistochemistry (PGP9.5, galectin-3, parafibromin, and Ki67) is better than any single marker and can be used to supplement classical histopathology in diagnosing parathyroid cancer.

Publication metadata

Author(s): Truran PP, Johnson SJ, Bliss RD, Lennard TWJ, Aspinall SR

Publication type: Article

Publication status: Published

Journal: World Journal of Surgery

Year: 2014

Volume: 38

Issue: 11

Pages: 2845-2854

Print publication date: 01/11/2014

Online publication date: 08/07/2014

ISSN (print): 0364-2313

ISSN (electronic): 1432-2323

Publisher: Springer


DOI: 10.1007/s00268-014-2700-2


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