Parafibromin as a Diagnostic Instrument for Parathyroid Carcinoma-Lone Ranger or Part of the Posse?

The diagnosis of parathyroid carcinoma requires an invasive growth pattern or metastases detected at histopathological examination; unfortunately, not all carcinomas exhibit visible malignant properties at the initial assessment. Therefore, immunohistochemical markers have been sought for the recogn...

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Main Authors: C. Christofer Juhlin, Anders Höög
Format: Article
Language:English
Published: Wiley 2010-01-01
Series:International Journal of Endocrinology
Online Access:http://dx.doi.org/10.1155/2010/324964
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author C. Christofer Juhlin
Anders Höög
author_facet C. Christofer Juhlin
Anders Höög
author_sort C. Christofer Juhlin
collection DOAJ
description The diagnosis of parathyroid carcinoma requires an invasive growth pattern or metastases detected at histopathological examination; unfortunately, not all carcinomas exhibit visible malignant properties at the initial assessment. Therefore, immunohistochemical markers have been sought for the recognition of parathyroid malignancy. In 2003, the Hyperparathyroidism 2 (HRPT2) gene was found mutated in the majority of sporadic parathyroid carcinomas investigated, and studies regarding the protein product parafibromin proposed loss of nuclear parafibromin as a highly sensitive marker for the detection of parathyroid carcinoma. Recent studies have not fully reproduced these findings, as subsets of carcinomas display positive parafibromin immunoreactivity, and fractions of adenomas demonstrate absent expression. Overall, parafibromin is a marker of value to the endocrine pathologist, but it cannot be recommended as a sole indicator of parathyroid carcinoma. Additional markers such as protein gene product 9.5 (PGP9.5) and adenomatous polyposis coli (APC) could complement parafibromin when assessing malignant potential of parathyroid tumours.
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spelling doaj-art-3098573dc9064728ae35796bf00ca0c82025-08-20T03:55:12ZengWileyInternational Journal of Endocrinology1687-83371687-83452010-01-01201010.1155/2010/324964324964Parafibromin as a Diagnostic Instrument for Parathyroid Carcinoma-Lone Ranger or Part of the Posse?C. Christofer Juhlin0Anders Höög1Department of Molecular Medicine and Surgery, Karolinska Institute, Karolinska University Hospital Solna, 17176 Stockholm, SwedenDepartment of Oncology-Pathology, Karolinska Institute, Karolinska University Hospital Solna, 17176 Stockholm, SwedenThe diagnosis of parathyroid carcinoma requires an invasive growth pattern or metastases detected at histopathological examination; unfortunately, not all carcinomas exhibit visible malignant properties at the initial assessment. Therefore, immunohistochemical markers have been sought for the recognition of parathyroid malignancy. In 2003, the Hyperparathyroidism 2 (HRPT2) gene was found mutated in the majority of sporadic parathyroid carcinomas investigated, and studies regarding the protein product parafibromin proposed loss of nuclear parafibromin as a highly sensitive marker for the detection of parathyroid carcinoma. Recent studies have not fully reproduced these findings, as subsets of carcinomas display positive parafibromin immunoreactivity, and fractions of adenomas demonstrate absent expression. Overall, parafibromin is a marker of value to the endocrine pathologist, but it cannot be recommended as a sole indicator of parathyroid carcinoma. Additional markers such as protein gene product 9.5 (PGP9.5) and adenomatous polyposis coli (APC) could complement parafibromin when assessing malignant potential of parathyroid tumours.http://dx.doi.org/10.1155/2010/324964
spellingShingle C. Christofer Juhlin
Anders Höög
Parafibromin as a Diagnostic Instrument for Parathyroid Carcinoma-Lone Ranger or Part of the Posse?
International Journal of Endocrinology
title Parafibromin as a Diagnostic Instrument for Parathyroid Carcinoma-Lone Ranger or Part of the Posse?
title_full Parafibromin as a Diagnostic Instrument for Parathyroid Carcinoma-Lone Ranger or Part of the Posse?
title_fullStr Parafibromin as a Diagnostic Instrument for Parathyroid Carcinoma-Lone Ranger or Part of the Posse?
title_full_unstemmed Parafibromin as a Diagnostic Instrument for Parathyroid Carcinoma-Lone Ranger or Part of the Posse?
title_short Parafibromin as a Diagnostic Instrument for Parathyroid Carcinoma-Lone Ranger or Part of the Posse?
title_sort parafibromin as a diagnostic instrument for parathyroid carcinoma lone ranger or part of the posse
url http://dx.doi.org/10.1155/2010/324964
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AT andershoog parafibrominasadiagnosticinstrumentforparathyroidcarcinomalonerangerorpartoftheposse