Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine portable view of the chest demonstrates ET tube terminating 6 cm above the carina . Low lung volumes . No left pleural effusion . Right costophrenic angle is not fully imaged . No pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is top normal . Perihilar vascular congestion . Partially imaged upper abdomen appears unremarkable .
    OUTPUT:
    
Low lung volumes and mild perihilar vascular congestion .