Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: One portable semi-erect AP view of the chest . The ET tube ends 3 cm above the carina . NG tube ends in the stomach with last sideport below the GE junction . Right PICC line ends in the mid SVC . Diffuse parenchymal opacities persist and are unchanged . Likely causes are interstitial lung disease , infection , pulmonary edema , or hemorrhage . This is superimposed on chronic fibrotic interstitial lung disease . No definite pleural effusions or pneumothorax . The heart size is normal . The mediastinal contours are stable .
    OUTPUT:
    
Unchanged diffuse parenchymal opacities .