Distinguishing between a chondroblastoma and an epiphyseal clear cell chondrosarcoma can be difficult. Helpful features which suggest a clear cell chondrosarcoma include:
- older age (chondroblastomas tend to occur 10-20 years earlier)
- larger mass
- absent adjacent bone oedema
- high T2 signal (solid component of chondroblastomas tend to be of an intermediate signal on all sequences)
- 1. MD. Murphey, EA. Walker, AJ. Wilson et al "From the Archives of the AFIP: Imaging of Primary Chondrosarcoma: Radiologic-Pathologic Correlation" RadioGraphics 2003 23: 1245-1278.