Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is asymmetric prominence of the interstitial markings , especially in the lower lung zones which although may be due to pulmonary edema , this finding may also be due to infection or another interstitial process . Additionally , there are opacities projecting over the lower portion of the spine on the lateral view and thus a mass at the lower pole of either hilum can not be excluded . There is mild cardiomegaly . No pneumothorax . Osseous structures are intact .
    OUTPUT:
    
1 . Asymmetric interstitial abnormality which may be due to pulmonary edema , possibly infection or other interstitial process . 2 . Recommend close follow up to exclude a mass at the lower pole of either hilum .