Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall single lead pacing device is again seen . Low lung volumes are noted . Increased interstitial markings are noted in the lungs with a basilar predominance which are similar compared to priors compatible with a chronic interstitial abnormality as seen on prior CT scan . There is no superimposed acute consolidation or effusion . The cardiomediastinal silhouette is stable . No acute osseous abnormalities . Hypertrophic changes are seen the spine .
    OUTPUT:
    
Findings compatible with patient 's underlying fibrosis without definite superimposed acute cardiopulmonary process .