Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart remains mildly enlarged . Aortic knob is calcified . Mediastinal and hilar contours are unchanged , with a small hiatal hernia again noted . Pulmonary vascularity is within normal limits . No focal consolidation , pleural effusion or pneumothorax is present . Multiple clips are seen in the right upper quadrant compatible with prior cholecystectomy . Degenerative changes of the left glenohumeral joint are incompletely assessed .
    OUTPUT:
    
No acute cardiopulmonary process .