Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were reviewed and compared to the most recent prior . The right middle lobe and right upper to mid lung opacities are improved but persist . A new left lower lobe opacity is likely infectious . Normal heart , pleural and mediastinal surfaces .
    OUTPUT:
    
1 . New left lower lobe opacities are likely infectious . 2 . Right middle lobe and right upper to mid lung opacities are improved but persist .