Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is borderline cardiomegaly . There is no pneumothorax or focal consolidation . No large pleural effusion is seen . Indistinct pulmonary vasculature is consistent with interstitial pulmonary edema , which is slightly increased since ___ .
    OUTPUT:
    
Interstitial pulmonary edema , which has increased slightly since ___ .