Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . The heart is at the upper limits of normal size with a left ventricular configuration , as before . Streaky opacities in the right upper and left lower lung suggesting minor scarring appear unchanged . Otherwise , the lungs appear clear . There are no definite pleural effusions or pneumothorax ; persistent effacement of the left costophrenic angle is probably due to chronic scarring .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .