Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A rounded density in the right lower lung is compatible with a right middle lobe pneumonia . Given that there has been increasing density in the right lung base compared with prior studies dating back to ___ , nonemergent chest CT is recommended for further evaluation . There is minimal left lung base pleural thickening . There is no pleural effusion or pneumothorax . Underlying moderate emphysema has progressed slightly compared with prior studies . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Rounded opacity in the right lung base concerning for a right middle lobe pneumonia . Finding is progressed compared with prior studies and may represent relapsing pneumonia or a slow growing underlying pulmonary lesion . Recommend nonemergent chest CT for further evaluation .