Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable elevation of the left hemidiaphragm with the stomach and part of the left colon in the left hemithorax . There is otherwise no focal consolidation , pleural effusion , or evidence of pneumothorax . The cardiomediastinal silhouette is unchanged . A left chest wall pacemaker is seen with leads in the right atrium and right ventricle . Mild degenerative changes are present in the thoracic spine .
    OUTPUT:
    
Overall , no significant change since prior study and no acute process .