Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is near complete opacification of the left hemi thorax , with minimal residual aeration in the left apex . Shift of midline structures to the right is noted . The right lung is clear . Heart size and mediastinal contours difficult to characterize given left hemi thorax opacification . Bony structures are intact .
    OUTPUT:
    
Near complete opacification of the left hemi thorax , likely reflecting left effusion and consolidation , with associated shift of midline structures to the right .