Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly with mild tortuosity of the thoracic aorta is unchanged since at least ___ . Central pulmonary vascular congestion with associated interstitial edema is mild . Increased opacity at the right lung base is more pronounced compared to prior examinations . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
Moderate cardiomegaly with mild interstitial edema . Asymmetrically increased density at the right lung base is likely related edema , however , concurrent pneumonia is not excluded . Consider repeat imaging after diuresis to assess for improvement .