fig2

Figure 2. CT scan image of periosteal chondrosarcoma arising in the femur with cortex erosion in a well-limited way (A); Macroscopic image of periosteal chondrosarcoma showing a large, lobulated mass lying in direct apposition with the underlying outer cortex (B); Microscopic interphase of the neoplasm with the host bone cortex, showing erosion and focal thinning (H&E; 25X) (C); Outer surface of the tumor showing bosselated margins and hypercellular, myxoid neoplastic lobules (H&E; 50X) (D)