Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a left - sided basilar chest tube in place . The amount of pleural effusion appears decreased since the prior examination . However , there does appear to be a small left - sided pneumothorax , measuring up to 8 mm along the lateral aspect of the lung . There is persistence of mild increased opacity in the left retrocardiac region , consistent with atelectasis . There is a diffuse alveolar and interstitial process involving the right hemithorax , although uncertain whether this is due to the portable technique and slightly decreased penetration . There is suggestion of a layering right - sided pleural effusion .
    OUTPUT:
    
1 . A new left - sided basilar chest tube with decreased pleural effusion and a small left pneumothorax . 2 . Suggestion of slight increased opacity in the right parahilar region , although this may be secondary to differences in technique .