Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a patchy opacity in the mid left lung field including the retrocardiac space that does not obscure the left hear border . Bilateral bibasilar discoid atelectases are also noted . The remaining lung fields are clear otherwise . The cardiac size is top normal , but the cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Patchy opacities in the left middle lung field without obscuring the left heart border suggest left lower lobe consolidation worrisome for infection and / or aspiration .