Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is normal in size . Mediastinal structures are remarkable for air - filled distention of the upper thoracic esophagus lateral to the trachea . Within the lungs , coarse bilateral lower lobe reticular opacities are present with mildly dilated bronchi . Although these findings are present on the prior study , newly developed patchy opacities have developed in both lung bases with associated partial obscuration of both hemidiaphragms . Bi-apical pleural and parenchymal scarring appears unchanged . No pleural effusion .
    OUTPUT:
    
1 . New patchy bibasilar lung opacities which may reflect recurrent aspiration pneumonia given clinical suspicion for this entity . 2 . These findings are superimposed on bibasilar interstitial lung disease , which could be due to a variety of etiologies including chronic aspiration , IPF and NSIP . If warranted clinically , dedicated chest CT with high - resolution technique may be considered following resolution of the acute basilar opacity .