Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate the lungs are well expanded . Apparent bulging of the posterior left mediastinum adjacent to the descending aorta , has been attributed to varices on prior studies . There is no evidence of focal consolidation , effusion , or pneumothorax . Mild interstitial prominence is present , most notably in the right lower lung , with no evidence of overt pulmonary edema .
    OUTPUT:
    
Mild interstitial prominence with no evidence of overt pulmonary edema . No pneumonia is present .