Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD / pacemaker device is noted with leads terminating in the right ventricle and region of the coronary sinus . Lung volumes are low . Heart size is mildly enlarged . Mediastinal contours are unchanged with calcification of the thoracic aorta noted . Increased interstitial markings are seen , most pronounced along the periphery of the lungs and within the upper lobes suggestive of a chronic interstitial lung disease . There may be mild interstitial pulmonary edema superimposed . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormality is detected . Degenerative changes are seen within the right glenohumeral joint .
    OUTPUT:
    
Possible mild interstitial pulmonary edema superimposed on a background of chronic interstitial lung disease . A high - resolution chest CT could be obtained for further assessment on a non-emergent basis , if not done previously .