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适应证掌握正确的扁桃体切除术能产生良好的治疗效果,但出血和疼痛仍是常见的严重问题,尤其是前者可引起失血性休克、呼吸道梗阻,甚至死亡。有些病人则由于存在手术禁忌证,无法施行此项手术。近数十年来推行冷冻疗法,实践证明它安全、无血和几乎无痛。Cooper(1961)曾试用液氮冷冻猴扁桃体,发现扁桃体在凝固和坏死过程中无出血或其他不良反应。Cahan等(1962)首先为狗成功地进行了扁桃体冷冻切除术。其后Hill(1966)、Leden(1967,1971)、等(1975)也进行了此项动物试验,并在临床上用以治疗扁桃体肥大和慢性扁桃
Indications Tonsillectomy can produce good results, but bleeding and pain remain common problems, especially when the former can cause hemorrhagic shock, airway obstruction, and even death. Some patients may not be able to perform this procedure because of surgical contraindications. Cryotherapy has been introduced in recent decades and proved to be safe, blood-free and almost painless. Cooper (1961) used liquid nitrogen to freeze monkey tonsils and found that tonsils had no bleeding or other adverse reactions during coagulation and necrosis. Cahan et al. (1962) first successfully performed tonsil cryosection for dogs. This animal trial was also followed by Hill (1966), Leden (1967, 1971), et al. (1975) and is used clinically to treat tonsil hypertrophy and chronic almond