我科自1979～82年用液氮冷冻治疗耳鼻咽部良、恶性肿物。其中随诊1/2～2年的有204例,男133例,女71例,年龄为9～84岁。 用简易电动加压液氮冷冻治疗器进行治疗。粘膜病变均用1％地卡因作表面麻醉,采用接触法或喷射法快速冷冻,自然融化复温。多数病例每次治疗剂量为30～60秒×2～3个冻融周期。恶性肿物要加大冷冻剂量。一般病例行1次治疗,少数行2～3次。 Our department has used liquid nitrogen cryotherapy for the treatment of benign and malignant tumors of the otolaryngology from 1979-82. Among them, 204 patients were followed up for 1/2 to 2 years. There were 133 males and 71 females, aged 9 to 84 years. Treatment with a simple electric pressurized liquid nitrogen cryotherapy device. Mucosal lesions were anaesthetized with 1% tetracaine, rapidly frozen by contact or jet, and naturally thawed and rewarmed. In most cases, the therapeutic dose is 30 to 60 seconds x 2 to 3 freeze-thaw cycles. Malignant masses need to increase their freezing dose. The general case was treated once, and a few lines were 2 to 3 times.