Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate unfolding of the thoracic aorta appears unchanged . It is difficult to exclude trace persistent pleural effusions noting blunting of posterior costophrenic sulci . There is no pneumothorax . Bilateral posterior lower lobe opacities have improved substantially including right infrahilar opacification . Suture anchors are present in the right humeral head . Severe degenerative changes are incompletely characterized along the right glenohumeral joint .
    OUTPUT:
    
Improving basilar opacities .