LearningRadiology: Enchondroma Imaging Features and Differential Diagnosis

Enchondroma is a benign cartilage tumor of bone, often found incidentally. Classic radiograph shows a well-defined lucent lesion with rings-and-arcs calcification. Key differential is low-grade chondrosarcoma.

• Most common in tubular bones of the hands and feet, but can occur anywhere.
• MRI shows lobulated, T2-hyperintense cartilage matrix with septal enhancement.
• Differentiation from chondrosarcoma requires attention to size, cortical involvement, and pain.

Automated summary

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