Phosphaturic mesenchymal tumor (PMT) is a rare and small tumor leading to oncogenic osteomalacia and deriving mostly from benign mesenchymal origin. The tumor may originate in any part of the body such as soft tissue or bone site, but is more frequent in the upper and lower extremities and craniofacial sinuses. Its most common type is oncogenic osteomalacia (OO) associated phosphaturic mesenchy...

We present an HIV-infected woman in whom antiretroviral treatment with tenofovir disoproxil fumarate (TDF) induced severe skeletal pain, synovial effusions and multiple fractures secondary to a Fanconi syndrome with hypophosphatemia and osteomalacia. TDF interferes with the replication of mitochondrial DNA in the proximal tubules of the kidney, which can explain the delayed onset of this form o...

Tumor-induced osteomalacia (TIO) is a rare cause of hypophosphatemia involving overproduction of fibroblast growth factor 23. TIO has been described largely in adults with small mesenchymal tumors. We report a case of TIO in a child who presented with knee pain and radiographic findings concerning for rickets, and was found to have maxillomandibular giant cell lesions. The patient was treated w...

Phosphaturic mesenchymal tumor (PMT) is a rare and small tumor leading to oncogenic osteomalacia and deriving mostly from benign mesenchymal origin. The tumor may originate in any part of the body such as soft tissue or bone site, but is more frequent in the upper and lower extremities and craniofacial sinuses. Its most common type is oncogenic osteomalacia (OO) associated phosphaturic mesenchy...