Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates cardiomegaly . When compared to prior radiograph dated ___ , lung volumes are improved . There is mild pulmonary vascular congestion though no overt in pulmonary edema . There is no pleural effusion or pneumothorax . A left pectorally placed defibrillator device is identified , its leads in unchanged position . The defibrillator lead is seen projecting over the right ventricle and a pacer lead along the diaphragmatic surface of the left ventricle . Hilar contours are stable when compared to prior examinations . Osseous structures demonstrates degenerative changes within bilateral acromioclavicular joints as well as within the visualized thoracolumbar spine .
    OUTPUT:
    
Cardiomegaly with mild pulmonary vascular congestion , no overt pulmonary edema . Improved lung volumes relative to prior study .