Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to most recent exam , there has been no significant interval change . There is persistent right basilar pleural - based thickening and likely scarring . Hazy right basilar opacities are similar and may be due to chronic underlying changes noting that they have significantly improved since ___ . The left lung remains clear where not obscured by overlying the left chest wall dual lead pacing device . Cardiac silhouette is stable in configuration . Prosthetic valve is again noted . Right chest wall port remains in place .
    OUTPUT:
    
No definite acute cardiopulmonary process . Right basilar changes appear chronic .