Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , inspiratory volumes are slightly lower . Otherwise , I doubt significant interval change . Heart size is borderline , but probably not enlarged allowing for technique . No CHF , focal infiltrate or effusion is identified . Probable mild right convex curvature in the upper thoracic spine , unchanged .
    OUTPUT:
    
No focal opacity to suggest pneumonia .