Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are normal . Patchy opacities are present at both lung bases , with otherwise clear lungs . There are no pleural effusions . Possible bronchial wall thickening is noted , particularly in the perihilar and infrahilar regions on the lateral radiograph .
    OUTPUT:
    
Nonspecific patchy bibasilar opacities , possibly due to aspiration or developing aspiration pneumonia given clinical concern for this entity . Apparent co-existing bronchial wall thickening could be due to aspirated secretions or a potentially more chronic airways disease . Followup radiograph may be helpful in this regard .