Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear opacities in the lung bases are unchanged compared to prior examination and likely reflect areas of scarring . No new confluent consolidation is identified . There is no pulmonary vascular congestion or overt edema . No large effusions are evident . Mediastinal and hilar contours are within normal limits . The heart size is top normal , though unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .