Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Flattening of the diaphragm may be secondary to emphysema or small airway obstruction . Heart size is top - normal . Chronic compression fractures at the mid thoracic level resulting in severe kyphosis .
    OUTPUT:
    
No evidence of pneumonia . Possible emphysema or small airway obstruction .