Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tracheostomy tube is in standard position . There is a right - sided PICC line with the tip terminating in the mid SVC . The enteric tube courses below the diaphragm with the tip beyond the scope of the film . Again , multiple calcified pleural plaques overlie the lungs with unchanged pleural thickening . There has been interval improvement of the left retrocardiac opacity compared to the exam performed earlier this morning , consistent with improving atelectasis . Non-specific opacity at the right lung base is unchanged . No new focal consolidations are seen . The small bilateral pleural effusions are stable . There is no pneumothorax . Moderate cardiomegaly is longstanding . The hilar and mediastinal contours are otherwise normal . There is no subdiaphragmatic free air .
    OUTPUT:
    
1 . No evidence of subdiaphragmatic free air . 2 . Interval improvement of left basilar atelectasis . No new focal opacities identified . 3 . Evidence of previous asbestos exposure .