Presentation
Pain in the right 3rd digit.
Patient Data
well-marginated diaphyseal-metaphyseal unique lucent lesion involving P1 of the right 3rd digit
associated pathological fracture within this lesion
small rings and arcs calcifications within the lesion matrix
no cortical breach, gross bone destruction, or soft tissue extension
no periosteal reaction
sharply-defined diaphyseal-metaphyseal unique lesion involving P1 of the right 3rd digit. It demonstrates a chondroid matrix -T1 isointense (compared to muscle), and T2 hyperintense
enhancement of the scalloped margins with curvilinear septa (rings and arcs enhancement pattern)
the fracture is not seen on T1 sequences
no soft tissue involvement
Case Discussion
This case demonstrates features of an enchondroma that may also be seen in low-grade chondrosarcoma, as the lesions are both histologically and radiographically very similar.
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