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Treatment Advances in Tumor-Induced Osteomalacia.
Calcif Tissue Int
January 2025
National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD, 20892, USA.
Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome caused by hypersecretion of fibroblast growth factor 23 (FGF23) by typically benign phosphaturic mesenchymal tumors (PMTs). FGF23 excess causes chronic hypophosphatemia through renal phosphate losses and decreased production of 1,25-dihydroxy-vitamin-D. TIO presents with symptoms of chronic hypophosphatemia including fatigue, bone pain, weakness, and fractures.
View Article and Find Full Text PDFPhosphaturic mesenchymal tumor of the popliteal fossa: a case report and literature review.
Front Oncol
December 2024
Joint Surgery Department, Weifang People's Hospital, Shandong Second Medical University, Weifang, Shandong, China.
Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome characterized by hypophosphatemia caused by excessive secretion of fibroblast growth factor-23 (FGF-23) by tumors. This leads to impaired bone mineralization and, ultimately, osteomalacia. The most common underlying cause is a phosphaturic mesenchymal tumor (PMT).
View Article and Find Full Text PDFA rare tumor of the Brainstem: Phosphaturic mesenchymal tumor.
J Clin Neurosci
December 2024
Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei 430071, China. Electronic address:
Tumour in the dark: a challenging case of osteomalacia.
Oxf Med Case Reports
December 2024
Department of Chemical Pathology & Metabolic Diseases, University Hospitals of Leicester NHS Trust, Groby Road, Leicester LE39QP, United Kingdom.
Tumour-induced osteomalacia (TIO), also known as oncogenic osteomalacia, is a rare paraneoplastic syndrome mediated by the overproduction of phosphaturic hormone fibroblast growth factor 23. TIO is most commonly caused by mesenchymal tumours (PMTs), which are typically small, slow-growing and often undetectable on physical examination and conventional imaging techniques. Patients with TIO typically undergo a protracted period of diagnostic workup and medical treatment due to presentation with nonspecific symptoms and difficulty in localising the culprit tumour.
View Article and Find Full Text PDFApproach to determining etiology of hypophosphatemia in a patient with coexisting phosphaturic mesenchymal tumor and fibrous dysplasia.
JBMR Plus
January 2025
Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States.
Dysregulated FGF23 production is a demonstrated cause of hypophosphatemia and osteomalacia. Diseases associated with these conditions include phosphaturic mesenchymal tumor (PMT) causing tumor induced osteomalacia, various forms of rickets, and fibrous dysplasia (FD). Coexistence of 2 conditions that can increase FGF23 concentrations is rare.
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