Cartilage fibroma easy to be confused with the diseases?

(A) giant cell tumor found in epiphyseal area, local cortical thinning significantly inflated. For osteolytic destruction, and there are a number of cross-cutting line spacing of bone, sometimes a typical bubble-like and easy to have a pathological fracture. (B) of the humerus bone cyst in the upper femur and the top is more common. Metaphysis tumor is located in the central and peripheral expansion, the more homogeneous areas transparent, and more bone cyst of the bone than the small interval.