No recurrence was found during 1 to 7 months follow-up.
随访1 ~ 7月，未见1例复发及神经性疼痛等并发症。
No recurrence was found in a follow-up of 6 to 12 months.
结果打鼾、鼻塞等症状消失或减轻，随访6～12个月无复发。
Additional extended vertical laryngectomy was then performed for 4 cases of them and no recurrence was found after 5 year follow-up.
局部复发5例，其中4例再行扩大垂直半喉切除术补救治疗，观察5年无复发；
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