Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Ill - defined opacity in the right lung base may represent early consolidation or atelectasis depending on the clinical setting . There is a suggestion of a a subtle increased opacity at the left base is well , which could be confirmed or excluded by PA and lateral radiographs . There is no pleural effusion , pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Ill - defined right lung base opacity may represent atelectasis or early pneumonia depending on the clinical setting .