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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 investigate the relationship between the occurrence of radiation enteritis and posterior uterus after radiotherapy for cervical cancer and its causes. Methods A retrospective analysis of 22 patients with radioactive enteritis in 212 cervical cancer patients receiving radiotherapy from 2002 to 2005 was performed. The incidence of radiation enteritis in patients with uterine anteroposterior and uterus was measured. The distance between uterine axis and the rectum in the uterine anteroposterior and posterior uterine patients was measured. Results The incidence of radiation enteritis in posterior uterus was significantly higher than that in anterior uterus (X ~ 2 = 21.10, P <0.01), and posterior uterine distance was closer to rectum (t = 7.33, P <0.05) , Post uterine posterior uterine retrograde flexion angle 9 ~ 22 °, the median angle of 17 °. Conclusions Posterior uterus is prone to enteritis because the uterus in the posterior uterus is closer to the rectum than the rectum, and the posterior uterine is apt to form an acute angle in the direction of the rectum.