Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . The heart is again enlarged . There is no pleural effusion or pneumothorax . Upper zone redistribution of pulmonary vessels suggests pulmonary venous hypertension but with no definite parenchymal edema or focal opacification .
    OUTPUT:
    
Findings suggest pulmonary venous hypertension without interstitial edema . Stable cardiomegaly .