Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . The heart size is within normal limits . No configurational abnormality is identified . Pulmonary vasculature is not congested . Similar as on preceding examination or records of ___ , there exist bilateral basal increased linear densities suggestive of either fibrosis or scar formations . On the left base , a surgical clip is overlying the seventh lateral intercostal space and projects in the mid portion of the lung tissue on the lateral view . Apparently , this is a surgical marker that has been placed during a pulmonary biopsy procedure already noted and described on the preceding examination in ___ . Comparison of the chest examinations does not show any significant interval change during this more than three - year examination interval . A transferred portable upright chest examination from___ and dated ___ did not disclose any significant interval change either .
    OUTPUT:
    
Stable chest findings in patient with evidence of chronic interstitial changes on the bases probably related to COPD .