Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is chronic . Diffuse infiltrative pulmonary abnormality is more severe at the lung bases , with right infrahilar confluence . Since pulmonary vasculature is engorged , the simplest explanation is pulmonary edema . However it there is no dilatation of mediastinal veins or any pleural effusion . I suggest careful follow - up to exclude a condition other than congestive heart failure , including interstitial pneumonia .
    OUTPUT:
    
Probable moderate pulmonary edema . Careful imaging followup advised for detection of alternative diagnoses , including pneumonia . Chronic moderate cardiomegaly .