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Τετάρτη 13 Δεκεμβρίου 2017

Heritable forms of primary hyperparathyroidism: a current perspective

Primary hyperparathyroidism (PHPT) is one of the most common of all endocrine disorders encountered by the practising histopathologist. The vast majority of lesions are sporadic in nature, approximately 85% of which are parathyroid adenomas, while hyperplasia and carcinoma account for 10–15% and fewer than 1%, of cases, respectively. Heritable forms of PHPT are much less common and present challenges both to clinicians and pathologists, particularly when they are the presenting feature of an endocrine syndrome. In such instances, pathologists play a key role in alerting physicians to the possibility of an underlying heritable endocrine syndrome and the potential for extra-endocrine manifestations. Therefore, a working knowledge of these disorders is essential for providing guidance to treating physicians. The aim of this update is to review the clinicopathological features, genetic bases and current management for patients with PHPT associated with multiple endocrine neoplasia (MEN) types 1, 2A and 4 and hyperparathyroidism-jaw tumour (HPT-JT) syndrome in the context of the 2017 World Health Organization (WHO) Classification of Tumours of the Endocrine Organs. Additionally, familial isolated hyperparathyroidism, familial hypocalciuric hypercalcaemia and neonatal severe hyperparathyroidism are discussed.



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