Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate - to - severe cardiomegaly is unchanged . Mediastinal and hilar contours are stable . The pulmonary vascularity is not engorged . Linear opacities in both lung bases likely reflect areas of subsegmental atelectasis and / or scarring . No pleural effusion is identified , and there is no pneumothorax . Degenerative changes of both acromioclavicular and glenohumeral joints are again noted , as well as multilevel degenerative changes of the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .