BMJ:妊娠长短与子宫内膜癌风险

2019-08-15 xing.T MedSci原创

由此可见,无论妊娠后不久后流产或妊娠40周,都会降低子宫内膜癌的风险。这种风险的降低可以通过在妊娠最初几周内发生的生物过程来解释,因为以人工流产结束的妊娠与以分娩结束的妊娠风险降低程度类似。

近日,顶级杂志BMJ上发表了一篇研究文章,研究人员旨在探讨妊娠持续时间与子宫内膜癌风险之间的关系。

该研究为基于丹麦全国登记的队列研究,参与者为所有于1935年至2002年出生的丹麦妇女。主要结果指标为使用对数线性泊松回归估计的妊娠数量、类型和持续时间对子宫内膜癌的相对风险(发病率比率)。

研究者表示,入组2311332名丹麦妇女在随访期间共计怀孕39476506743名妇女在57347622人年(平均每位妇女随访24.8年)的随访期间患上了子宫内膜癌。

在调整了年龄、月经和社会经济因素后,首次妊娠与子宫内膜癌风险明显降低相关,无论其是否以人工流产(调整后的相对风险为0.53(95%置信区间为0.45-0.64)或分娩(0.66,0.61-0.72)结束,每次随后的妊娠都与风险进一步降低有关。无论是在人工流产(0.81,0.77-0.86)还是分娩(0.86,0.84-0.89)。妊娠持续时间、妊娠年龄、自然流产、肥胖、产妇出生队列、生育力和社会经济因素没有改变这些结果。

由此可见,无论妊娠后不久后流产或妊娠40周,都会降低子宫内膜癌的风险。这种风险的降低可以通过在妊娠最初几周内发生的生物过程来解释,因为以人工流产结束的妊娠与以分娩结束的妊娠风险降低程度类似。 

原始出处:

Anders Husby,et al.Pregnancy duration and endometrial cancer risk: nationwide cohort study.BMJ 2019;https://doi.org/10.1136/bmj.l4693

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    2019-10-01 gaoxiaoe
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