Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are slightly diminished , resulting in crowding of the bronchovascular structures . No pleural effusion , pneumothorax or focal airspace consolidation . Heart is normal size . No pulmonary edema . Mediastinal and hilar contours are unremarkable .
    OUTPUT:
    
Low lung volumes . No acute radiograph for cardiopulmonary abnormality , but followup radiograph with improved inspiratory level may be considered if there is clinical suspicion for infection .