Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette demonstrates left ventricular configuration , and the aorta is diffusely tortuous . Mediastinal and bilateral hilar lymphadenopathy are in keeping with diagnosis of sarcoid . Recently described interstitial edema has resolved . Right infrahilar opacity has slightly improved , and appears to localize primarily to the right middle lobe on the lateral radiograph . Additional patchy right lower lobe opacity is present , partially obscuring the right hemidiaphragm on both PA and lateral views .
    OUTPUT:
    
1 . Resolution of interstitial edema . 2 . Slight improvement in right infrahilar opacity , which could be due to pneumonia in the appropriate clinical setting .