Post-traumatic reactive and resorptive lesions of the medial end of the clavicle.

Three soldiers presented with a painful swelling of the sternoclavicular area. Computed tomography (CT) studies showed sclerosis as well as lysis of the medial end of the clavicle with adjacent soft-tissue swelling. Bone biopsy revealed new bone formation and inflammatory reaction; cultures were negative, no tumor cells were found. The patients recovered after antibiotic treatment. Although the CT findings cannot completely rule out a malignant lesion, these changes in the medial end of the clavicle in young people may suggest trauma as the etiology.