Tumor-Induced Osteomalacia as a Result of a Phosphaturic Mesenchymal Tumor: Detecting Rare Origin

Phosphaturic mesenchymal tumor (PMT) is strongly related to tumor-induced osteomalacia (TIO) which brings diverse skeletal events, such as bony deformities, gait disturbance, and multiple bone fractures. Overexpressed fibroblast growth factor 23 by the tumor induces hypophosphatemia leading to the oncogenic osteomalacia, a rare paraneoplastic syndrome. PMT occurring in the oral and maxillofacial regions is extremely rare, and this case highlights the need to understand mechanisms by which local lesions can affect systemic conditions, and the importance of a combination of physical examinations, laboratory investigations, and radiologic investigations for a decisive diagnosis.