3.9 Article

Phosphaturic Mesenchymal Tumors in the Head and Neck Demonstrate a Broad Clinical and Morphologic Spectrum

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HEAD & NECK PATHOLOGY
卷 16, 期 3, 页码 902-912

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SPRINGER
DOI: 10.1007/s12105-022-01419-8

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Epithelial component in phosphaturic mesenchymal tumor; ERG; FGF23; Phosphaturic mesenchymal tumor; SATB2; SSTR2A; Tumor-induced osteomalacia

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Phosphaturic mesenchymal tumour (PMT) is a rare tumour associated with tumor-induced osteomalacia. We report three cases of PMT involving the head and neck, highlighting the diverse clinical and histologic features. One of the lesions showed a mixture of epithelial and mesenchymal elements, posing a diagnostic challenge.
Phosphaturic mesenchymal tumour (PMT) is a rare tumour that occurs in bone or soft tissue and is associated with production of fibroblast growth factor 23 (FGF23) leading to tumor-induced osteomalacia. We report three cases of PMT involving the head and neck that highlight the broad spectrum of clinical and histologic features of PMT. One of these lesions from the hard palate demonstrated an admixture of epithelial and mesenchymal elements, a feature that can pose a diagnostic challenge. The diagnostic utility of immunohistochemistry including FGF23, somatostatin receptor 2A, SATB2, ERG and CD56 is discussed. The biochemical pathway in the development of PMT associated tumor induced osteomalacia and its role in investigations and management of PMT is also described.

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