Fig. 2

A 58-year-old man had left leg thigh pain for 3 months and was diagnosed with pubic dedifferentiated chondrosarcoma. a Plain radiograph demonstrated bone destruction at the pubic symphysis with ill-defined margins and irregular high-density lesion. b, c Computed tomography (CT) reconstruction displayed the pubic destruction, punctiform calcification and ossification, and a soft tissue mass. d Three-dimensional CT reconstruction revealed pubic destruction and a pelvic mass. e-g Magnetic resonance imaging showed unevenly long T1WI (e and f) and long T2WI (g) signal, with ill-defined margins, calcification, and ossification. The expansile destruction and calcification were typical for chondrosarcoma