Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of the cardiac silhouette is re - demonstrated . The aorta is markedly tortuous , and mediastinal and hilar contours are similar . Pulmonary arteries remain enlarged suggestive of underlying pulmonary arterial hypertension . Pulmonary vasculature is not engorged . Lungs are hyperinflated with emphysema again noted , most pronounced in the upper lobes . Prominence of the left superior mediastinum with mild rightward deviation of the trachea is compatible with known enlargement of the left thyroid lobe . Patchy opacities are noted within both lung bases likely reflective of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . Left - sided Bochdalek 's hernia is again unchanged .
    OUTPUT:
    
Mild bibasilar opacities , likely atelectasis , but no focal consolidation .