Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is within normal limits the heart is not enlarged . Aorta is mildly unfolded . No CHF , focal consolidation , or effusion is detected . Minimal atelectasis in the right cardiophrenic angle is improved compared with the prior study . Otherwise , no focal infiltrate .
    OUTPUT:
    
No frank consolidation . Subsegmental atelectasis in the right middle lobe , without definite infiltrate .