Of 8 cases, 3 cases with the tumors occurred in nasal cavities, 1 in maxillary sinus, 2 in nasopharynx, 1 in posterior wall of oropharynx.

• 3例死亡,其中1例在出院2年后死于局部复发,1例3年后死于多发性骨髓瘤,1例2年后死于心脏病;失访1例。