Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0015672 (fatigue)
 51,768 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Oncogenic osteomalacia is an acquired, rare paraneoplastic syndrome characterized by renal phosphate wasting and subsequent hypophosphatemic osteomalacia. The condition is usually associated with a phosphaturic mesenchymal tumor, which produces fibroblast growth factor 23, the primary circulating factor responsible for reduced tubular phosphate reabsorption. Clinically, adult patients typically present with bone pain, myalgia, recurrent and/or multiple stress fractures, and fatigue, with serum levels typified by low 1,25-(OH)2 vitamin D3, increased alkaline phosphatase, and normal calcium, parathyroid hormone, calcitonin, 25-OH-vitamin D3, and 25,25-(OH)2 vitamin D3 levels. The tumor in question is typically benign and can be of little clinical significance apart from its role in causing hypophosphatemic osteomalacia. Detection of the tumor, therefore, can often be delayed and requires an astute index of suspicion.
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PMID:Oncogenic Osteomalacia From a Primary Phosphaturic Mesenchymal Tumor of the Toe: A Case Report. 2544 Dec 66

Tumor-induced osteomalacia (TIO) is a paraneoplastic syndrome resulting in renal phosphate wasting and decreased bone mineralization. TIO is usually induced by small, slowly growing tumors of mesenchymal origin (phosphaturic mesenchymal tumor mixed connective tissue variant [PMTMCT]). Nonspecific symptoms including fatigue, bone pain, and musculoskeletal weakness make the diagnosis elusive and often lead to a delay in treatment. The prognosis of TIO is excellent following complete resection of the neoplasm, which leads to the rapid and complete reversal of all symptoms. If the tumor cannot be detected, treatment relies on supplementation with phosphate and active vitamin D compounds. Subsequent radiotherapy in case of incompletely resected tumors or definitive radiotherapy in unresectable tumors is an important treatment option to avoid recurrence or metastasis even though this occurs rarely. Due to the risk of recurrence or late metastases, long-term monitoring is required even in TIO patients diagnosed with a benign tumor.
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PMID:Tumor-Induced Osteomalacia: an Up-to-Date Review. 2590 Jan 90