Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . Lung volumes are slightly low , but without focal consolidation concerning for pneumonia . The left pectoral pacemaker with leads in stable positions , likely in the right ventricle . There is been interval removal of the right PICC . The upper abdomen is unremarkable . Post CABG changes are noted . Degenerative changes are noted throughout the thoracic spine .
    OUTPUT:
    
Unchanged position of pacemaker leads . No cardiomegaly . No acute cardiopulmonary process .