放射性口腔、口咽粘膜反应是头颈部肿瘤放疗最常见的并发症，严重时不仅可延迟治疗时间，甚至病人因不能耐受而放弃治疗。我们应用思密达防治放射性口腔、口咽粘膜反应，取得较好疗效，现报道如下。１　材料与方法１９９６年１月～１９９８年８月收治的拟行面颈联合野放疗患者 Radioactive oral oropharyngeal mucosa reaction is the most common complication of radiotherapy of head and neck cancer. In serious cases, it can not only delay the treatment time, but also give up the treatment because the patient can not tolerate. We use Smecta to prevent radioactive oral oropharyngeal mucosal reactions, and achieved good results, are reported below. 1 Materials and Methods January 1996 ~ August 1998 admitted to the proposed face and neck joint field radiotherapy patients