Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heterogeneous right lung base opacity has increased since ___ and is consistent with infection in the appropriate clinical setting . Subtle opacity overlying the right mid and upper lobes could represent additional foci of pneumonia or atelectasis in setting of low lung volumes . The left lung is essentially clear . No pneumothorax . The heart size and cardiomediastinal contours are stable .
    OUTPUT:
    
1 . Heterogeneous right lung base opacity consistent with infection is better assessed on concurrently performed CT abdomen / pelvis . 2 . Subtle right mid and upper lobe opacities could represent additional foci of pneumonia or atelectasis .