Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A ventriculoperitoneal shunt courses across the right side of the chest . The cardiac , mediastinal and hilar contours appear stable including borderline cardiomegaly . There is a small unchanged focus of lingular scarring . Otherwise the lungs appear clear .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease . Borderline heart size .