Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes result in bronchovascular crowding and bibasilar atelectasis . There is no focal consolidation , pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes are stable . There is pulmonary and mediastinal vascular engorgement suggesting volume overload , without overt pulmonary edema .
    OUTPUT:
    
No pneumonia , edema , or effusion .