Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the prior examination , there has been minimal interval change . The lungs are essentially clear without focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The heart size is normal . Mediastinal and hilar contours are normal .
    OUTPUT:
    
No radiographic evidence for acute or chronic tuberculosis . Findings were conveyed by Dr . ___ to Dr . ___ ___ telephone at 14 :06 on ___ , 5 minutes after discovery .