Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Status post removal of tracheostomy tube . The subglottic and proximal tracheal air columns are not well visualized , possibly related to the known history of subglottic stenosis , with possible component of edema or granulation tissue following removal of the tracheostomy tube . This would be more fully evaluated by dedicated airway CT . Cardiomediastinal contours are within normal limits . Lungs are clear except for linear left basilar atelectasis . No pleural effusion .
    OUTPUT:
    
1 . Limited visualization of subglottic and proximal tracheal air columns as described above . 2 . Linear left basilar atelectasis .