Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , with crowding of bronchovascular markings . There is streaky left lower lobe atelectasis . Enlarged azygos and right central pulmonary veins . Heart size is borderline enlarged . Tortuous aorta . No pleural effusions or pneumothorax . Mild bilateral acromioclavicular arthropathy .
    OUTPUT:
    
1 . Left lower lobe atelectasis . 2 . Mild central venous congestion .