Presentation
Pain
Patient Data
Age: 50 years
Gender: Female
From the case:
Enchondroma of distal femur
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An intramedullary lytic lesion with pop-corn calcification seen at the meta-diaphyseal region of distal femur. Zone of transition is narrow. No periosteal reaction or cortical breach is seen.
Findings are suggestive of enchondroma.
Case Discussion
Enchondromas are slow growing, benign, cartilaginous tumors commonly found in bones of feet and hand. Other common sites include distal femur, proximal tibia, proximal fibula and proximal humerus. Among the benign chondroid neoplasms enchondromas are second most common in frequency. Incidental detection of enchondroma in distal femur while evaluation of knee pain is not uncommon.
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