Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate an area of focal opacification in the right lung base concerning for aspiration or pneumonia . Persistent blunting of both costophrenic angles is consistent with small bilateral pleural effusions . Again seen is prominence of interstitial markings , suggestive of chronic lung disease or elevation of pulmonary vascular pressure . The cardiomediastinal and hilar contours are unchanged . Incidental note is made of a gaseous dilation of the esophagus and a large hiatial hernia . There is no pneumothorax .
    OUTPUT:
    
Opacification of the right lung base concerning for aspiration or pneumonia .