{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T13:21:42Z","timestamp":1783948902766,"version":"3.55.0"},"reference-count":19,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T00:00:00Z","timestamp":1776384000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Endocrinol."],"abstract":"<jats:p>\n                    Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome resulting from excessive secretion of fibroblast growth factor-23 (FGF23) by phosphaturic mesenchymal tumors (PMTs). We report the case of a 35-year-old man with a three-year history of progressive musculoskeletal symptoms and severe mobility impairment, who had not received a correct diagnosis during this period. Laboratory evaluation revealed severe hypophosphatemia and elevated FGF23 levels. Magnetic resonance imaging (MRI) and\n                    <jats:sup>68<\/jats:sup>\n                    Ga-DOTA-TATE PET\/CT identified a metabolically active lesion in the sartorius muscle. Surgical resection of the tumor resulted in complete resolution of symptoms, restoration of mobility and normalization of phosphate metabolism. This case emphasizes the importance of considering TIO in patients with unexplained osteomalacia and highlights the diagnostic value of functional imaging.\n                  <\/jats:p>","DOI":"10.3389\/fendo.2026.1814853","type":"journal-article","created":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T04:14:48Z","timestamp":1776399288000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Tumor induced-osteomalacia caused by a phosphaturic mesenchymal tumor in the sartorius muscle: a case report"],"prefix":"10.3389","volume":"17","author":[{"given":"Weronika","family":"Rymon Lipinska","sequence":"first","affiliation":[{"name":"Faculty of Medicine, Medical University of Gdansk","place":["Gdansk, Poland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natalia","family":"Filckowska","sequence":"additional","affiliation":[{"name":"Faculty of Medicine, Medical University of Gdansk","place":["Gdansk, Poland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcin","family":"Ekman","sequence":"additional","affiliation":[{"name":"Department of Surgical Oncology, Transplant Surgery and General Surgery, Faculty of Medicine, Medical University of Gdansk","place":["Gdansk, Poland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jaros\u0142aw","family":"Kobiela","sequence":"additional","affiliation":[{"name":"Department of Surgical Oncology, Transplant Surgery and General Surgery, Faculty of Medicine, Medical University of Gdansk","place":["Gdansk, Poland"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,4,17]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1210\/endrev\/bnac026","article-title":"Tumor-induced osteomalacia: a comprehensive review","volume":"44","author":"Minisola","year":"2023","journal-title":"Endocrine 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clinical review of 895 cases","volume":"111","author":"Bosman","year":"2022","journal-title":"Springer"},{"key":"B10","doi-asserted-by":"publisher","DOI":"10.1111\/os.12980","article-title":"Comparison of 18F-FDG PET\/CT and 68Ga-DOTATATE PET\/CT in the targeted imaging of culprit tumors causing osteomalacia","volume":"13","author":"Yu","year":"2021","journal-title":"Orthop Surg"},{"key":"B11","doi-asserted-by":"publisher","DOI":"10.1053\/j.semdp.2019.07.002","article-title":"Phosphaturic mesenchymal tumors: a review and update","volume":"36","author":"Folpe","year":"2019","journal-title":"Semin Diagn Pathol"},{"key":"B12","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-024-04614-6","article-title":"Phosphaturic mesenchymal tumor: management and outcomes of ten patients treated at a single institution","volume":"53","author":"Gonzalez","year":"2024","journal-title":"Skeletal 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