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A well defined 17.5 mm oval region of sclerosis lies within the proximal end of the left second metacarpal. It extends to the cortical surface and there is associated smooth, benign-type periosteal reaction extending along the radial aspect of the second metacarpal over a distance of several centimetres. No associated bony erosion, fracture, soft tissue mass or soft tissue calcification.
Although indeterminate, the appearances favours a benign aetiology. Given the clinical history however an old fracture cannot be completely excluded. In the first instance, correlation with any prior imaging is recommended.
Elsewhere, no evidence of recent fracture or dislocation.