Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The mediastinal and hilar contours appear within normal limits . Fullness of the aortopulmonary window that may reflect enlargement of the main pulmonary artery and possibly lymphs , but not significantly changed . Bilateral bilateral hilar prominence appears unchanged . The cardiac , mediastinal , and hilar contours appear stable . There is mild upper zone redistribution of pulmonary vascularity without frank interstitial edema . There is no pleural effusion or pneumothorax . Mild degenerative changes are similar along the thoracic spine .
    OUTPUT:
    
Findings suggesting mild pulmonary venous hypertension without frank pulmonary edema . Stable prominent mediastinal and hilar contours which may reflect mild residual lymphadenopathy , enlargement of central pulmonary arteries , or perhaps both .