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Diagnostic US in the longitudinal plane of a rib during maximal inhalation demonstrating cortical offset (crossed arrow) consistent with a fracture and surrounding hematoma (asterisk) displacing the overlying pectoralis minor muscle (pm) and a portion of the pectoralis major muscle (PM). The costochondral junction (solid arrow) is located medial to the fracture. US of the same rib demonstrates increased cortical offset during maximal exhalation.
