Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine portable view of the chest demonstrates low lung volumes . No pneumothorax is seen . Extensive bilateral interstitial abnormality , largel pulmonary fibrosis , has worsened over six months , which can be due either to worsening of the fibrosis or concurrent pulmonary edema . The hila and mediastinal vasculature and the moderate cardiomegaly are more pronounced , which can be explained either by biventricular or progressive right heart failure . No pleural effusion .
    OUTPUT:
    
1 . No pneumothorax or detectable hemothorax . 2 . Severe pulmonary fibrosis , possible concurrent pulmonary edema . Worsening right heart and / or biventricular decompensation .