Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ONE PORTABLE SEMI - ERECT AP VIEW OF THE CHEST . The lungs are clear . There is no pleural effusion or pneumothorax . The cardiac , mediastinal , and hilar contours are normal . No pulmonary vascular congestion .
    OUTPUT:
    
No evidence of pneumonia or evidence of volume overload .