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我科自1977年2月～1991年12月共收治腮腺混合瘤术后患者27例,经放射治疗,获较好疗效.现报告如下:1 材料与方法本组27例均经手术病理检查证实.男14例,女13例;年龄16～72岁,中位年龄44.4岁.发病部位:耳前区15例,耳前下区8例,下颌角区4例.肿瘤大小:直径小于2.0cm者18例,2.0～5.0cm者6例.大于5.0cm者3例.本组中原发者(指经一次手术)18例,复发者(指经二次以上手术)9例(包括3例经三次手术者);术后5年复发恶变者6例(无1例合并瘘),合并瘘者6例(无1例发生恶变).复发者均为多灶性.放疗方法:放射源为~(60)Co或深部X线.设单侧野,D_T38～50GY/3.8～5周,每日1次,每次200cGY.照射范围:上界平颧弓水平.下界在下颌角下2cm,前缘平颧弓垂直线,后方在外耳孔垂线与乳突下缘相交,后上角挡铅,使照射野呈“(?)”或“(?)”状,野面积为8～10cm×10～12cm.
Our department from February 1977 ~ December 1991 were treated parotid gland tumor in patients with mixed surgery after 27 cases, by radiation therapy, received better results are as follows: 1 Materials and Methods The group of 27 patients were confirmed by pathological examination .Fourteen males and thirteen females were aged from 16 to 72 years with a median age of 44.4 years.The incidence sites were: 15 cases in the anterior region, 8 cases in the anterior face and 4 cases in the mandibular angle region.The tumor size: 18 cases, 2.0 ~ 5.0cm in 6 cases, more than 5.0cm in 3. In this group, 18 cases of primary (referring to the first operation), recurrence (referring to the second surgery) in 9 cases (including 3 cases After three surgeries), recurrence 5 years after operation in 6 cases (no 1 case with fistula), fistula in 6 cases (no case of 1 case of malignant transformation) .The recurrence was multifocal.Radiation method: radioactive source ~ (60) Co or deep X-ray.One side field, D_T38 ~ 50GY / 3.8 ~ 5 weeks, once a day, each time 200cGY.Excitation range: the upper level flat zygomatic arch level.The lower bound at the mandibular angle 2cm, Front vertical zygomatic arch vertical line, the rear perpendicular to the outer ear hole and the lower edge of the mastoid intersection, the upper corner block lead, the irradiation field was “(?)” Or “(?)” Shape, wild area of 8 ~ 10cm 10 ~ 12cm.