Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Extremely low lung volumes are seen . Patchy opacities seen in the lungs bilaterally , specifically in the right mid lung and at the bilateral bases which could be chronic . Tracheostomy tube is identified . Cardiomediastinal silhouette is within normal limits for technique and low inspiratory volumes . No acute osseous abnormality is detected . Mid thoracic dextroscoliosis is noted .
    OUTPUT:
    
Bilateral parenchymal opacities which could due to chronic underlying changes or atelectasis however superimposed acute infection or aspiration is also possible .