Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The degree of opacification of the right lung has increased , particularly in mid upper parts of the colon . In the left mid lung , there is also new patchy opacity , somewhat rounded ; development of a new area of malignant involvement is not excluded . Although the degree of pleural effusion , if any , on the right is difficult to assess , a component of pleural effusion is likely with atelectasis , but no definite pleural effusion is demonstrated on the left side .
    OUTPUT:
    
1 . Worsening opacification of the right lung . 2 . New vague left mid lung opacity , infectious versus malignant .