Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . The heart is moderately enlarged as before . There is no large pleural effusion and no convincing evidence of pneumonia . As before the main pulmonary artery is enlarged . There is pulmonary vascular congestion without frank pulmonary edema . There is no pneumothorax .
    OUTPUT:
    
1 . Persistent moderate cardiomegaly and enlargement of the main pulmonary artery with pulmonary vascular congestion but no frank pulmonary edema . 2 . No large pleural effusion . A small pleural effusion is difficult to exclude given limitation of patient 's body habitus . There is no convincing evidence of pneumonia .