Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is stable in comparison to multiple prior exams , consistent with a tortuous thoracic aorta . The hilar contours are unchanged , and within normal limits . Apparent hyperdensity at the right hilum is only seen on frontal projection , and was not seen on prior exams as recently as ___ , favored to represent superimposition of normal structures versus calcified hilar lymph nodes . There is no focal lung consolidation . There is no pulmonary vascular congestion or pulmonary edema . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
No acute cardiopulmonary process . Stable chest x-ray .