Exercise-Induced Elastofibroma Dorsi

Elastofibroma dorsi is a rare, slow-growing tumor-like process. It is typically found in the soft tissue compartment between the inferior scapula and the chest wall of an elderly person. Although its findings in magnetic resonance images and computed tomography usually allow a prospective diagnosis, recognizing the benign nature of the lesion with histopathological evaluation is important to avoid radical surgery. Its pathogenesis is unknown, but one of the postulated mechanisms is repetitive mechanical trauma around the shoulder girdle. We report a synchronously diagnosed bilateral elastofibroma excised from the back of a 49-year-old woman who had doing aerobic exercise for a long time.