Lancet Oncol:CT仿真结肠镜可有效监测小结直肠息肉的体积增长

2013-07-03 echo1166 dxy

目前,我们对小的结直肠息肉(6-9mm)在体内的生长率和临床意义目前还不甚明确。为了试图对上述问题进行探究,来自美国Wisconsin大学医学和公共卫生学院的Perry J Pickhardt等设计了相关研究,旨在采用CT仿真结肠镜对上述特征的息肉的行为学进行评估。他们的研究结果发表在Lancet Oncol 6月的在线期刊上。本研究为纵向研究,研究者所纳入的受试者为在美国的两个医疗中心内接受CT

目前,我们对小的结直肠息肉(6-9mm)在体内的生长率和临床意义目前还不甚明确。为了试图对上述问题进行探究,来自美国Wisconsin大学医学和公共卫生学院的Perry J Pickhardt等设计了相关研究,旨在采用CT仿真结肠镜对上述特征的息肉的行为学进行评估。他们的研究结果发表在Lancet Oncol 6月的在线期刊上。

本研究为纵向研究,研究者所纳入的受试者为在美国的两个医疗中心内接受CT仿真结肠镜对结直肠肿瘤进行常规筛查的无症状的成年人。在本研究的入组时和后续的随访过程中,由有经验的检查者(PJP, DHK, JLH)采用CT仿真结肠镜成像的筛查结果对体内的息肉的体积和最大直线尺寸进行评估。研究者事先定义,将随访时息肉的体积与入组时的体积进行比较,如果体积的变化每年超过了20%则分别为进展(生长在20%或以上)、稳定(生长小于20%且消退小于20%)和消退(消退大于20%)。研究者将在进行结肠镜检查后经组织学证实的亚组受试者和本研究结果进行比较。本研究在ClinicalTrials.gov注册,注册号为NCT00204867。

在2004年4月和2012年6月期间,研究者筛查了22006名无症状的成年人,包括243名成年人(平均年龄57.4岁[标准差7.1],中位年龄56岁[IQR 52-61岁],其中106人[37%]为女性),其中有306个小的结直肠息肉。对受试者的平均随访期间为2.3年(标准差1.4年,范围1-7年,中位年限2.0年[IQR 1.1-2.3])。在306个息肉中有68个 (22%)出现进展,153个息肉(50%)保持稳定,另有85个(28%)息肉出现消退。研究者在最终的CT仿真结肠镜检查后进行了结肠镜检查组织学证实了131个病变部位。在23个经证实的晚期腺瘤中有21个(91%)出现进展,而在84个已经证实的非晚期腺瘤中有31个(37%)出现进展,在198个其他病变中有15个(8%)出现进展,差异具有显著统计学意义。与在最初CT仿真结肠镜筛查后监测和处理的6-9mm小息肉相比,在CT仿真结肠镜随访过程中变成晚期腺瘤的OR为15.6%(95%可信区间为7.6-31.7)。对于已经证实的23个晚期腺瘤而言,平均息肉体积变化增加每年为77%,而在84个经证实为非晚期腺瘤中,平均息肉体积变化增加每年为16%,在经证实的非肿瘤性病变或没有切除的息肉中,平均息肉体积变化减低为每年13%,差异具有显著统计学意义。通过CT仿真结肠镜检查进行随访所确定的息肉体积在180mm3以上,经证实为晚期腺瘤(包括一个延迟肿瘤)的敏感性为92%(22/24)、特异性为94%(266/282)、阳性预测值为58%(22/38)、阴性预测值为99%(266/268)。在6-9mm的息肉中仅有16个(6%)在随访过程中超过10mm。

对小结直肠息肉进行体积增长评估是一种具有临床意义的有效生物标记。与非晚期腺瘤相比,晚期腺瘤生长速度更快,而其他类型的小息肉则是保持稳定或出现消退。本研究的发现提供了一种创伤较小的随访策略。但是我们仍需要进一步的研究提供更多的信息以确定没有出现显著增长的未切除的小息肉的最终转归。


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    2015-03-02 xiaoai5777

    好文章,超赞

    0

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    2014-01-09 howi
  3. [GetPortalCommentsPageByObjectIdResponse(id=17407, encodeId=2f4f1e407b4, content=好文章,超赞, beContent=null, objectType=article, channel=null, level=null, likeNumber=166, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=36a81612921, createdName=xiaoai5777, createdTime=Mon Mar 02 21:22:00 CST 2015, time=2015-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1827580, encodeId=c0a0182e58069, content=<a href='/topic/show?id=1b6210686b2' target=_blank style='color:#2F92EE;'>#Lancet#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10686, encryptionId=1b6210686b2, topicName=Lancet)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f0227, createdName=howi, createdTime=Thu Jan 09 20:58:00 CST 2014, time=2014-01-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1864458, encodeId=71161864458c7, content=<a href='/topic/show?id=16ce133504e' target=_blank style='color:#2F92EE;'>#Oncol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13350, encryptionId=16ce133504e, topicName=Oncol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b63894, createdName=minlingfeng, createdTime=Sat Oct 19 07:58:00 CST 2013, time=2013-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1434405, encodeId=2d83143440533, content=<a href='/topic/show?id=95de81e4889' target=_blank style='color:#2F92EE;'>#肠镜#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81748, encryptionId=95de81e4889, topicName=肠镜)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Fri Jul 05 04:58:00 CST 2013, time=2013-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1452632, encodeId=04af145263261, content=<a href='/topic/show?id=098ee8679ad' target=_blank style='color:#2F92EE;'>#结直肠#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78679, encryptionId=098ee8679ad, topicName=结直肠)], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=9ace5575596, createdName=crystal0564, createdTime=Fri Jul 05 04:58:00 CST 2013, time=2013-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1486741, encodeId=4ee81486e4118, content=<a href='/topic/show?id=b1d8e868430' target=_blank style='color:#2F92EE;'>#结直肠息肉#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78684, encryptionId=b1d8e868430, topicName=结直肠息肉)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=066c8204452, createdName=neurowu, createdTime=Fri Jul 05 04:58:00 CST 2013, time=2013-07-05, status=1, ipAttribution=)]
    2013-10-19 minlingfeng
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    2013-07-05 zhouqu_8
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