Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The hilar and mediastinal contours are within normal limits . The lung volumes are low , resulting in bronchovascular crowding . Coarse bibasilar interstitial opacities may represent new consolidations or aspiration pneumonitis . There is mild bronchial wall thickening in the central regions . There is no pneumothorax . A small right pleural effusion is present .
    OUTPUT:
    
Coarse bibasilar opacities may reflect aspiration or infection .