Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previous large scale consolidation has cleared entirely . Predominantly in the left lower lobe and to a lesser degree in the right middle lobe is a new abnormality consisting of fine linear opacities and , best appreciated on the lateral view , bronchial wall thickening . This is more likely to be an atypical infection , due to a virus or mycoplasma ( or given the appropriate clinical circumstances , Pneumocystis ) , than bacterial pneumonia . Cardiomediastinal and hilar silhouettes and pleural surfaces are normal .
    OUTPUT:
    
Possible atypical pneumonia .