Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are normal . Lungs are slightly overexpanded but grossly clear . There are no pleural effusions or pneumothoraces .
    OUTPUT:
    
No radiographic evidence of pneumonia . If clinical suspicion for Pneumocystis infection is high , consider a high - resolution chest CT , as it is more sensitive than radiographs for detecting this opportunistic infection .