Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is rotated somewhat to the right . The cardiac silhouette is moderately enlarged . The aorta is tortuous . Left base patchy opacity is seen which could be due to pneumonia or aspiration versus atelectasis . No large pleural effusion is seen . There is no pneumothorax . There may be minimal central pulmonary vascular engorgement without overt pulmonary edema . Dual lead left - sided pacer device is seen , new since the prior study , with leads extending to the expected positions of the right atrium and right ventricle .
    OUTPUT:
    
Patchy left base opacity could be due to pneumonia , aspiration , or atelectasis . Cardiomegaly . Central pulmonary vascular engorgement without overt pulmonary edema .