Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . Central pulmonary arteries are substantially enlarged , as seen previously . The mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . Mild reticulation at the lung bases suggesting an interstitial process appears unchanged without clear evidence for superimposed focal opacity . Two fiducial seeds project over the right upper quadrant .
    OUTPUT:
    
Similar pulmonary artery enlargement and interstitial abnormality in the lungs , but no clear evidence for superimposed acute disease .