Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild enlargement of the cardiac silhouette , increased from ___ with central vascular prominence without edema . There is no definite focal consolidation , although evaluation of the left lung base is limited . There is no pleural effusion or pneumothorax . A right humeral head replacement is incompletely imaged .
    OUTPUT:
    
Mild cardiomegaly with central pulmonary vascular congestion without frank interstitial edema .