NCIt definition : A paraneoplastic disorder affecting the skeletal system. It associated with one of
four tumor types: phosphaturic mesenchymal tumor, mixed connective tissue type; osteoblastoma-like
tumor; ossifying fibroma-like tumor or non-ossifying fibroma-like tumor. These neoplasms
secrete fibroblast growth factor 23, which in addition to causing decreased renal
phosphate reabsorption also affects the expression of 25-hydroxy-1-alpha-hydroxylase
resulting in poor bone mineralization. Clinical signs include fractures, bone pain
and muscle weakness. Once lesions are detected, prognosis is extremely favorable as
resection most often results in cure.;