Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate well expanded lungs . A small patchy density is seen in the lingula , consistent in appearance with atelectasis or scarring . The lungs otherwise are clear . The there is slight prominence of the central pulmonary vasculature , consistent with pulmonary venous hypertension . Cardiomediastinal silhouette is unremarkable . There is no pneumothorax or pleural effusion . Visualized osseous structures are unremarkable .
    OUTPUT:
    
Slight prominence of the central pulmonary vasculature , consistent with mild pulmonary venous hypertension , but without frank congestive heart failure .