Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The overall appearance is similar to the prior film , particularly with regard to the opacities in the right lung . Slight interval improvement in retrocardiac opacity . Possible new faint hazy opacity in the left cardiophrenic region . No gross left effusion . The left upper and mid lung is grossly clear , without focal infiltrate or evidence of CHF . Minimal scarring / bullous change at the left lung apex is again noted .
    OUTPUT:
    
No gross interval change , particularly in the right lung .