Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small left pleural thickening / effusion and retrocardiac opacity . Mild volume loss with mediastinal shift to the left and left paramediastinal linear opacities likely reflect post treatment changes . The right lung is clear . No pulmonary edema . Mild cardiac enlargement . No pneumothorax . Bilateral mastectomies .
    OUTPUT:
    
Left pleural thickening / effusion is small . Stable volume loss in the left lung . No acute focal consolidation .