Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right lung is hyperexpanded with mild leftward shift of the mediastinum . There is consolidation of the peripheral left upper lung zone seen only on the PA view . There is no pleural effusion or pneumothorax . The heart size is normal . There is irregularity of the left hilar contour . These findings would be compatible with a prior history of empyema .
    OUTPUT:
    
Mediastinal shift and parenchymal irregularities are compatible with a prior history of empyema . However , in the abscence of such a history , further evaluation with CT - Chest is recommended . These results were entered into the critical results dashboard by ___ ___ at 9 :54 a .m . on ___ .