case_images: PMC2694310_01
case_images: Plain radiography at first visit. Marked calcification was observed in the right thigh.
case_images: SRCM2009-186565.001.jpg
case_images: PMC2694310_01_SRCM2009-186565.001.jpg
case_images: fig1
case_images: Plain radiography of the right thigh showed a large soft tissue mass with marked calcification in a radial pattern (Figure 1).
case_images: Computed tomography of thigh. The tumor was not in contact with the femur or its periosteum.
case_images: SRCM2009-186565.002.jpg
case_images: PMC2694310_01_SRCM2009-186565.002.jpg
case_images: fig2
case_images: Computed tomography (CT) showed that many refined calcifications were scattered in the mass, and it was not in contact with the femur or pelvis (Figure 2).
case_images: Magnetic resonance imaging of the tumor. (a) T1-weighed MRI. The mass showed mixed low and iso-intensity signals. (b) T2-weighed MRI. The mass showed mixed high and iso-intensity signals. (c) The tumor was enhanced remarkably by gadolinium.
case_images: SRCM2009-186565.003.jpg
case_images: PMC2694310_01_SRCM2009-186565.003.jpg
case_images: fig3
case_images: After intravenous administration of a gadolinium-based contrast material, the tumor was well enhanced (Figure 3).
case_images: Gallium scintigraphy showed increased uptake in the primary tumor only.
case_images: SRCM2009-186565.004.jpg
case_images: PMC2694310_01_SRCM2009-186565.004.jpg
case_images: fig4
case_images: Gallium scintigraphy showed marked heterogeneous accumulation especially in distal part of tumor (Figure 4).
case_images: Plain radiography of lung. Multiple metastatic lesions in both lungs were found at first visit.
case_images: SRCM2009-186565.005.jpg
case_images: PMC2694310_01_SRCM2009-186565.005.jpg
case_images: fig5
case_images: Plain chest radiography revealed 8 nodular densities in the left lung and 6 in the right, which were considered to be metastasis (Figure 5).
case_images: Plain radiography of lung at the final follow-up. Secondary lesion in left lung grew remarkably, and mediastinum was pressured severely.
case_images: SRCM2009-186565.006.jpg
case_images: PMC2694310_01_SRCM2009-186565.006.jpg
case_images: fig6
case_images: Nevertheless, the pulmonary lesion maintained its momentum conclusively occupying the left lung (Figure 6) and causing breathing difficulties.
case_images: Histological section. (a) tumor of the thigh. Formation of osteoid was observed (x200). (b) strong magnification of Figure 7(a). (x400) (c) metastatic lesion (x200).
case_images: SRCM2009-186565.007.jpg
case_images: PMC2694310_01_SRCM2009-186565.007.jpg
case_images: fig7
case_images: The other pulmonary metastasis sites did not have any osteoid material (Figure 7).