A 52-year-old woman, who had previous bilateral subpectoral breast augmentation, underwent thoracotomy for a right upper lobe pulmonary adenocarcinoma. Seven years after her thoracic surgery, the patient noticed a reduction in her right breast volume, with shortness of breath and cough. A computed tomography study of the chest revealed intrathoracic migration of her right breast implant with no sing of capsule rupture. Subsequent video-assisted thoracoscopy confirmed this diagnosis.