Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube ends 6 cm above the carina . A nasogastric tube courses into the stomach and ends off of the radiograph . There are diffuse alveolar opacities in a predominantly perihilar location . There is no pleural effusion or pneumothorax . There is no free air beneath the right hemidiaphragm . No acute osseous abnormality is seen . The soft tissues are unremarkable .
    OUTPUT:
    
Diffuse predominantly perihilar airspace opacities with relative sparing of the costophrenic angles are concerning for acute respiratory distress syndrome . For further details , please see the chest CT performed the same day .