Tumors of the parotid gland.
D000402:Airway Obstruction; D006801:Humans; D009369:Neoplasms; D010306:Parotid Gland; D010307:Parotid Neoplasms; D014132:Trachea; D014133:Tracheal Diseases
PAROTID GLANDS/tumors; TRACHEA/obstruction