Fig. 3
From: Dedifferentiated chondrsarcoma: a clinicopathologic analysis of 25 cases
A 55-year-old woman had a mass at the tibia for half a year and was diagnosed with dedifferentiated chondrosarcoma. a, b Plain radiograph revealed bone destruction at the proximal segment of right tibia with ill-defined margins, irregular circular and patchy calcification, and periosteal reaction. c Coronal computed tomography reconstruction showed bone destruction, irregular and circular calcification. d-f. Magnetic resonance imaging in STIR sequence (d), T1WI (e) and fat-suppression T2WI (f) showed long T1 and long T2 signal with low signal in calcification and ossification. The bone destruction and typical circular calcification of the tumor cartilage are typical for chondrosarcoma