Phosphaturic Mesenchymal Tumor

Phosphaturic Mesenchymal Tumor

Elizabeth A. Montgomery, MD

Hematoxylin & eosin shows an admixture of multinucleated giant cells, spindle cells, flocculent grumous (“grungy”) material image, and hemosiderin image.

Hematoxylin & eosin shows another area of the neoplasm, with more prominent mineralization image.



  • Phosphaturic mesenchymal tumor (PMT)

  • Phosphaturic mesenchymal tumor (mixed connective tissue variant) PMT-MCT


  • Osteomalacia-associated mesenchymal tumor


  • Rare distinctive mesenchymal neoplasm associated with oncogenic osteomalacia

    • Syndrome of osteomalacia due to phosphate wasting

Jul 9, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Phosphaturic Mesenchymal Tumor

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