Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate left lung base air space opacity , slightly more conspicuous on the PA view since ___ but partially improved on lateral view . There is no pleural effusion or pneumothorax . Hilar and mediastinal silhouettes are unchanged . Heart size is normal . Bronchial wall thickening at the right lung base is noted .
    OUTPUT:
    
Left lower lobe opacity , concerning for persistent or recurrent pneumonia . Recommend repeat radiographs in 4 weeks to document complete resolution after appropriate therapy .