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Phosphaturic mesenchymal tumor

MONDO:0006368

An extremely rare, benign or malignant mesenchymal tumor arising from the soft tissues or bones. It is a distinctive tumor, which usually displays the following morphologic characteristics: low cellularity, myxoid changes, presence of spindled cells and osteoclasts, hemangiopericytoma-like vessels, hemorrhage, and osteoid-like matrix. It is associated with the presence of a paraneoplastic syndrome called osteogenic osteomalacia. This syndrome usually precedes the appearance of the tumor, and it is characterized by phosphaturia, hypophosphatemia, normal serum calcium levels, and decreased levels of 1,25-dihydroxyvitamin D3. Patients present with bone and muscle pain, severe muscle weakness, fractures, gait disturbances, skeletal deformity, height loss, and slow growth. The metabolic disturbances improve or completely disappear after the complete resection of the tumor.

Also known as: phosphaturic mesenchymal tumor, phosphaturic mesenchymal tumor, mixed connective tissue type, phosphaturic mesenchymal tumor, mixed connective tissue variant

1427 clinical trials for this condition and its sub-types, 1 tagged with Phosphaturic mesenchymal tumor itself.

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