Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar opacities with cystic lucencies correlate with the patient 's known , severe bronchiectasis with mucoid impaction . Overall , the extent of bronchiectasis appears grossly unchanged from the prior examination dated ___ except for minimal improvement in the periphery of the right lower lobe . The upper lungs are grossly clear . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is unchanged , with known aneurysmal dilation of ascending aorta , more fully evaluated by prior CT .
    OUTPUT:
    
Unchanged , severe bibasilar bronchiectasis with extensive mucoid impaction . The severity and extent of bronchiectasis suggests an underlying congenital cause .