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Diagnosis: The x-rays reveal an expansile lesion of the phalanx with associated fracture. Most often, these represent enchondromas, benign cartilage tumors that are seen as well-defined lytic bone lesions (most often in the phalanges). However, bone infarct and osteosarcoma should be considered. While frequently an incidental finding, the weakness of the bone often results in fractures due to minor inuury.
Case presented by Teleradiology Specialists (

Woman with minor finger trauma