Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unchanged . Left basilar opacification appears slightly increased in extent compared to the prior exam , which could reflect worsening atelectasis or infection adjacent to the area of known malignancy . There is unchanged left basilar pleural thickening and a small left pleural effusion . Right lower lobe ill - defined nodular opacity is unchanged . Other previously noted nodules within the right lower lobe are not as well visualized on the current exam . The patient is status post right upper lobectomy . No pneumothorax or right - sided pleural effusion is demonstrated .
    OUTPUT:
    
Slight interval increase in opacification within the left lung base which could suggest worsening postobstructive atelectasis or infection adjacent to the site of known malignancy .