Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly , mediastinal silhouette and hilar contours are unchanged from prior exam . Increased retrocardiac opacities are not substantiated on the lateral view . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process . Stable moderate cardiomegaly .