梨状窝或环后癌,术后发生下咽部狭窄者,据报告可达48～72％,原发于喉内者也有10～30％,与术前后放疗无肯定关系。轻者(1～2cm长)定期扩张可收效。狭窄长者则有赖手术解决,以往有报道采用胸大肌肌皮瓣、中厚皮片及颊部岛状粘膜修复者。作者1983年曾报道用舌根肌粘膜瓣一期修复防止下 Piriform or posterior ring cancer, the occurrence of hypopharyngeal stenosis were reported to be up to 48 ~ 72%, primary laryngeal also have 10 to 30%, and no relationship between preoperative and postoperative radiotherapy. Light (1 ~ 2cm long) regular expansion can be effective. Strict elderly are dependent on surgery to solve the past, there are reports of the use of pectoralis major myocutaneous flap, thick skin and cheek island mucosa repair. The authors reported in 1983 with the use of the tongue base muscle mucosal flap to prevent a period of repair