Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is significant opacification of the right hemi thorax , mostly secondary to a large pleural effusion . Underlying parenchymal consolidation can not be excluded . The left lung is well inflated with no focal consolidation . Cardiomediastinal silhouette is midline and within normal limits .
    OUTPUT:
    
Large right pleural effusion with resultant significant collapse of the of the right lung , however underlying pneumonia can not be excluded .