Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest ___ at 10 :48 are submitted .
    OUTPUT:
    
More focal opacity in the posterior segment of the right upper lobe persists and is concerning for aspiration or pneumonia . Linear opacity at the left base on the frontal view is felt to likely reflect atelectasis . No evidence of pulmonary edema . The heart is enlarged which may reflect cardiomegaly , although pericardial effusion should also be considered . A left single lead pacer remains in place . Increased soft tissue in the right paratracheal region may represent prominent vascular structures , although lymphadenopathy in this area can not be excluded . No pneumothorax .