Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes cause bronchovascular crowding . Elevation the left hemidiaphragm is stable from multiple prior studies . Enlarged cardiac silhouette is unchanged from multiple prior studies , likely related to tortuous aorta and mediastinal fat . There is no focal consolidation , pleural effusion , pneumothorax , or pulmonary edema .
    OUTPUT:
    
No acute cardiopulmonary process .