Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is midly enlarged . The hilar and mediastinal contours are within normal limits . A moderately tortuous aorta is unchanged in appearance . The central pulmonary vessels are normal in caliber . Linear bibasilar atelectasis is again seen . There is no pneumothorax or pleural effusion . There is chronic moderate osteoarthropathy of the bilateral glenohumeral joints .
    OUTPUT:
    
No acute intrathoracic process .