- Malignant tumors of hand extremely rare
- Most common is chondrosarcoma due to malignant transformation of pre-existing enchondroma
- Enchondroma turning malignant most common in Ollier disease (multiple enchondromas)
- Quite often diagnosed as late as 10 years after onset. No specific clinical symptoms
- Rarely ever metastasize, so local amputation is done to avoid recurrence
Imaging
- Metacarpal or phalangeal chondral tumor usually seen in proximal phalanx
- Essentially indistinguishable from encondromas which are expansile and can show deep cortical scalloping
- Presence of focal osteolysis and soft tissue calcification should point towards malignant change
Read more
Bernard, Stephanie A., et al. “Improved differentiation of benign osteochondromas from secondary chondrosarcomas with standardized measurement of cartilage cap at CT and MR imaging.” Radiology 255.3 (2010): 857-865.
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