Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable frontal view of the chest dated ___ at ___ is submitted
    OUTPUT:
    
Overall cardiac and mediastinal contours are stable . The bilateral diffuse parenchymal and interstitial abnormality is not significantly changed and consistent with known underlying chronic lung disease . No evidence of pulmonary edema . No large effusions . No pneumothorax . Several tubes are seen overlying the upper abdomen .