Tumor-Induced Osteomalacia: Increased Level of FGF-23 in a Patient with a Phosphaturic Mesenchymal Tumor at the Tibia Expressing Periostin
Phosphaturic mesenchymal tumor mixed connective tissue variant. (a) Histopathology of the tumor consisting of monomorphic cells with round cell nuclei without increased mitotic activity (hematoxylin-eosin stain: HE 200x), (b) scattered multinucleated giant cells (HE 400x), and ((c)–(e)) expression of CD68, SSTR2, and POSTN in tumor tissue (immunohistochemistry).
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