Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Lung volumes are low but the lungs are clear . No focal consolidation , pleural effusion , or pneumothorax . Bilateral hilar nodes are enlarged since ___ , as seen on the same - day CT abdomen . The left bronchus appears narrowed . The thoracic aorta is slightly tortuous . The heart size and cardiomediastinal contours are normal . No radiopaque foreign body .
    OUTPUT:
    
Enlarged bilateral hilar lymph nodes . Narrowing of the left bronchus may be due to mass effect . As recommended on the same - day abdominal CT , chest CT may be obtained for further evaluation .