Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . Nodular opacity projecting over the right lung base is presumably a nipple shadow as it was not present on recent exam . Small calcified granulomas noted in the right lung . Ground - glass nodule at the left lung base seen on CT is not clearly delineated and should be followed as previously outlined . Cardiomediastinal silhouette is within normal limits . Right chest wall dual lead pacing device is again noted .
    OUTPUT:
    
No acute cardiopulmonary process . Ground - glass nodule at the left lung base seen on CT is not clearly delineated and should be followed as previously outlined .