case_images: PMC3533608_01
case_images: MRI lumbar spine: enhanced T1 weighted axial image. Enhancing, well-defined benign phosphaturic mesenchymal tumor in lumbar vertebra.
case_images: CRIM.ENDOCRINOLOGY2012-185454.001.jpg
case_images: PMC3533608_01_CRIM.ENDOCRINOLOGY2012-185454.001.jpg
case_images: fig1
case_images: An outside MRI of the lumbar spine showed an infiltrative lesion in the L-4 vertebra with collapse of the body (confirmed on repeat MRI at our institution, Figure 1).
case_images: Coronal PET-CT scan. Hypermetabolic focus corresponding to the lumbar lesion.
case_images: CRIM.ENDOCRINOLOGY2012-185454.002.jpg
case_images: PMC3533608_01_CRIM.ENDOCRINOLOGY2012-185454.002.jpg
case_images: fig2
case_images: The L-4 lesion was hypermetabolic on PET scan (Figure 2).
case_images: Photomicrograph (H&E stain, 10x; inset lower left, 60x) showing uniform bland appearing spindle cells with hemangiopericytoma-like vasculature. Rare multinucleate giant cells (not pictured) were also present.
case_images: CRIM.ENDOCRINOLOGY2012-185454.003.jpg
case_images: PMC3533608_01_CRIM.ENDOCRINOLOGY2012-185454.003.jpg
case_images: fig3
case_images: A repeat CT guided needle biopsy of L-4 showed a low grade spindle cell neoplasm with positive FGF-23 mRNA expression by RT-PCR (Figure 3), confirming the diagnosis of mixed phosphaturic mesenchymal tumor (PMT).