Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . The aorta is tortuous . Mediastinal and hilar contours are otherwise unchanged . Mild pulmonary vascular congestion is present . Streaky opacities in the lung bases may reflect areas of bronchial wall thickening with atelectasis though aspiration is not excluded . No pleural effusion or pneumothorax is present . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
Mild pulmonary vascular congestion . Streaky bibasilar opacities likely reflect atelectasis though aspiration is not excluded .