Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Allowing for differences in patient positioning , the right pleural effusion is not significantly changed . Increased airspace opacity at the right lung base may represent a superimposed infectious process or relaxation atelectasis . There is no left - sided pleural effusion . Multiple rounded parenchymal opacities are consistent with patient 's known pulmonary nodules . The cardiomediastinal silhouette is stable . There is no pneumothorax or pulmonary edema .
    OUTPUT:
    
Increased airspace opacity in the right lung base may represent developing pneumonia or atelectasis related to the unchanged moderate right pleural effusion .