Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is probable mild hyperinflation , suggesting background COPD . The heart is not enlarged . There is patchy opacity in the right infrahilar / cardiophrenic region which may lie within the right middle lobe . Minimal atelectasis noted at the left base . No other infiltrate is identified . No frank consolidation . No CHF or effusion . Slight asymmetric pleural thickening noted at the right lung apex .
    OUTPUT:
    
1 . Patchy opacity in right infrahilar region could represent an early pneumonic infiltrate . Recommend followup radiograph after resolution of acute symptoms to confirm resolution of the radiographic findings . 2 . Background hyperinflation noted .