Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The study is somewhat limited due to low lung volumes and the patient 's chin and neck obscuring assessment of the right lung apex . Streaky bibasilar airspace opacities likely reflect atelectasis though aspiration or infection can not be completely excluded . The cardiac , mediastinal and hilar contours are unchanged with mild enlargement of cardiac silhouette and tortuosity of the thoracic aorta again noted . There is crowding of the bronchovascular structures but no overt pulmonary edema is present . A small left pleural effusion is unchanged . Compression deformity of an upper lumbar vertebral body is unchanged . Marked degenerative changes of the left glenohumeral joint are present .
    OUTPUT:
    
Persistent bibasilar airspace opacities may reflect atelectasis but infection or aspiration can not be excluded . Small left pleural effusion .