Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral images of the chest . Mildly prominent pulmonary vasculature . Retrocardiac opacity , which may reflect atelectasis but can not exclude pneumonia or aspiration in the right clinical setting . Possible small left pleural effusion . There is no right pleural effusion . No pneumothorax is seen . The cardiomediastinal silhouette is borderline enlarged .
    OUTPUT:
    
1 . Prominent pulmonary vasculature . 2 . Retrocardiac opacity , which may reflect atelectasis but can not exclude pneumonia or aspiration in the right clinical setting .