Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is diffuse interstitial abnormality , slightly more prominent at the bilateral bases , and of uncertain chronicity . The bilateral hila are enlarged . There is no dense consolidation or overt pulmonary edema . There is no pleural effusion or pneumothorax . The cardiac silhouette is normal .
    OUTPUT:
    
1 . Diffuse interstitial abnormality of uncertain chronicity , which could be due to sarcoid , although atypical infection can not be excluded . Recommend correlation with prior chest radiographs if available . 2 . Enlarged hila , likely from lymphadenopathy related to sarcoid . Consider correlation with prior imaging or a nonurgent CT of the chest for further evaluation .