Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube is identified . Linear left basilar opacities are seen . The lungs are otherwise clear . There is no visualized pneumothorax . There is gas identified within the lower aspect of the neck extending into the upper mediastinum . The cardiomediastinal silhouette is otherwise within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
Tracheostomy tube identified . No visualized pneumothorax however there is subcutaneous gas extending from the upper mediastinum into the neck . Linear left basilar opacity , potentially atelectasis .