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Fig. 4 | BMC Musculoskeletal Disorders

Fig. 4

From: Dedifferentiated chondrsarcoma: a clinicopathologic analysis of 25 cases

Fig. 4

A 75-year-old woman had left leg pain for half a year and swelling of left knee for 5 months and was diagnosed to have dedifferentiated chondrosarcoma. a-f Plain radiograph (a and b) and computed tomography (c-f) displayed calcification within the medullary cavity, osteolytic destruction in the distal end, cortical destruction, and a soft tissue mass. g, h Magnetic resonance imaging in T1WI (g) and T2WI (h) showed unevenly long T1 and long T2 signal in the lesion. i. ECT scan demonstrated increased radionuclide uptake at the distal femoral segment and assembling of radionuclide at the distal femoral end with some areas of low uptake of radionuclide. This case showed the upper calcified chondroma and lower bone destruction with dedifferentiation

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