From the case:
Diagram - distribution of solitary enchondromas of the hand
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The diagram above outlines frequency of occurrence of solitary enchondromas of the hand, as labeled.
Case Discussion
Enchondromas are the most common benign primary bone tumor of the small tubular bones of the hands and feet. They appear most commonly as a geographic lucent lesion, centrally located within the metaphyseal region, and display varying degrees of calcification within their matrix. They can be mildly expansile with endosteal scalloping, and present a very low risk of malignant degeneration. Enchondromas are typically incidental findings, or may present with a pathological fracture through the lesion.