Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are patchy interstitial infiltrates bilaterally , most consistent with mild pulmonary edema . Some of the infiltrates are more confluent , particularly on the left , and superimposed infection is difficult to exclude . There is no pleural effusion or pneumothorax . The mediastinal contours are normal . The heart size is mildly enlarged .
    OUTPUT:
    
1 . Patchy interstitial infiltrates likely represent mild pulmonary edema , though superimposed infection is difficult to exclude , particularly on the left . Consider repeat radiograph after diuresis . 2 . Mild cardiomegaly .