Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Hazy bilateral interstitial opacities are noted and likely representative of chronic interstitial abnormalities . Additionally , bibasilar opacities are noted and likely representative of atelectasis . Cardiomediastinal silhouette remains normal . Extensive atherosclerotic calcifications are noted at the aortic arch . Severe glenohumeral osteoarthritis changes with joint space narrowing are again partially imaged on the right .
    OUTPUT:
    
1 . Hazy bilateral interstitial opacities are noted and likely representative of chronic interstitial abnormalities . No acute cardiopulmonary process otherwise noted . 2 . Vague lucency noted in the mid upper abdomen . It is unclear whether this radiograph was truly an upright radiograph or not . As a result , a dedicated upright or later decubitus radiograph is recommended if clinical suspicion for free air is high . Findings discussed by Dr . ___ with Dr . ___ ___ telephone at 7 :43 am on ___ .