Fifth finger pathological fracture - enchondroma
Right finger pain, sudden onset while driving car.
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Transverse extra-articular fracture with a mild displacement/angulation through the 5th distal phalanx shaft occurring through a central 5 mm long expansile lesion with ground glass matrix. No cortical destruction, calcified periosteal reaction. Associated soft tissue swelling. No further fracture or focal osseous lesion is identified.
Typical presentation of low-energy trauma resulting in a pathological fracture. The underlying lesion is most likely an enchondroma.