Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to ___ chest radiograph , no changes are noted . Severe pectus excavatum is noted on lateral view and is unchanged from prior study . The lungs are well expanded and clear . There is no pneumothorax nor pleural effusions . The heart size is normal but appears falsely enlarged by the overlying compressing anterior chest wall deformity . The mediastinal silhouette , hilar , and pleural surfaces are normal .
    OUTPUT:
    
1 . The heart size is normal but appears falsely enlarged by the overlying compressing anterior chest wall pectus excavatum . No acute cardiopulmonary process noted .