Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest . Tracheostomy tube remains in place . The lungs are grossly clear noting limitation due to positioning . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
No definite acute cardiopulmonary process noting limitation due to positioning with the lung apices obscured by the patient 's face and the bases not well evaluated .