Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No large pleural effusion is seen although trace pleural effusion be difficult to exclude . Right base opacity is worrisome for pneumonia . There is moderate pulmonary vascular congestion . No pneumothorax is seen . The cardiac silhouette is top - normal . Mediastinal contours are unremarkable .
    OUTPUT:
    
No large pleural effusion , trace pleural effusion difficult to exclude . Right base opacity worrisome for pneumonia . Moderate pulmonary vascular congestion .