摘要
目的探讨宫颈癌放疗后放射性肠炎的发生与后位子宫的关系及其原因。方法回顾性分析2002—2005年接受放疗的212例宫颈癌患者中发生放射性肠炎的22例患者。比较前后位子宫患者放射性肠炎的发生率,测量近阶段各15例前后位子宫患者子宫中轴(仅测C点截面)与直肠的距离,及后位子宫患者的子宫后倾后屈角度。结果后位子宫患者放射性肠炎的发生率明显高于前位子宫患者(X^2=21.10,P<0.01),后位子宫患者C点与直肠的距离较近(t=7.33,P<0.05),后位子宫患者的子宫后倾后屈角度9～22°,中位角度17°。结论后位子宫患者易于发生放射性肠炎,原因是后位子宫患者子宫中轴距直肠较近,且后装治疗中y轴与z轴在直肠方向易形成锐角关系,导致受量过大。
Objective To approach the cause of radiation induced enterocolitis and its relationship with retropostion of the uterus in uterine cervical cancer after radiotherapy. Methods Twenty-two patients with radiation induced enterocolitis, from 212 patients with uterine cervical cancer who had received radiotherapy during 2002-2005, were retrospectively analyzed. The incidence between patients with anteposition and patients with retroposition of uterus was compared. The distance between uterine central axis and the rectum of 15 patients with anteposition and 15 patients with retroposition of the uterus was measured, as well as the uterus retroversional flexion angle of the retropositioned uterus. Results The incidence of radiation enterocolitis in patients with retroposition of uterus was obviously higher than that in patients with anteposition （x^2 =21. IO,P 〈0.01 ）. The distance between point C and the rectum in patients with retroposition of uterus was shorter（ t = 7.33 ,P 〈 0. 05 ）. The retroversional flexion angle of retropostitioned uterus were between 9-22° with a median angle of 17°. Conclusion The incidence of radiation induced enterocolitis is higher in patients with retropostition of uterus after radiotherapy, because the distance between the uterine central axis and the rectum is shorter. The y axis and z axis often form an acute angle in the rectal direction during after-loading therapy, which would had led to an excessive dose to the rectum.
出处
《中华放射肿瘤学杂志》
CSCD
北大核心
2007年第4期290-292,共3页
Chinese Journal of Radiation Oncology
关键词
宫颈肿瘤/放射疗法
放射性肠炎
后位子宫
Cervix neoplasms/radiotherapy
Radiation enterocolitis
Retropostition of uterus
