经直肠腔内超声弹性成像术前评价T4期直肠癌  

Endorectal elastography in preoperative evaluation of T4 rectal carcinomas

作　　者：张春爽[1] 赵世芬[1] 项玉平[1] 张颖[1] 高媛[1] 

机构地区：[1]大连大学附属新华医院超声科,辽宁大连116021

出　　处：《中国医学影像技术》2013年第12期1994-1997,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的评价弹性成像技术术前评价T4期直肠癌的能力。方法应用经直肠腔内超声对经病理证实的直肠癌患者进行检查,对超声诊断为UT3期及UT4期的45例患者应用弹性成像技术再次分期,并分别与术后病理T分期进行对照。结果常规经直肠腔内超声与应用弹性成像技术对T4分期的诊断准确率分别为75.56%(34/45)、86.67%(39/45),敏感度分别为64.29%(9/14)、78.57%(11/14),特异度分别为80.65%(25/31),90.32%(28/31),二者的敏感度和特异度差异无统计学意义。UT分期、弹性成像分期与病理一致性检验的Kappa值分别0.441和0.689。结论术前评价T4期直肠癌时,弹性成像与病理结果的一致性好,有助于T4期患者术前分期。Objective To evaluate the efficacy of endorectal elastography in T4 rectal carcinomas. Methods Forty-five patients with primary rectal carcinoma confirmed by pathology underwent endorectal ultrasound, and UT3 or UT4 patients were re-staging with endorectal elastography. The preoperative staging results were compared with those of postoperative pathological staging. Results The accuracy of conventional endorectal ultrasound and endorectal elastography forpreoperative T4 staging was 75.56% （34/45） and 86.67% （39/45）, the sensitivity was 64.29% （9/14） and 78.57% （11/14）, specificity was 80.65% （25/31） and 90.32% （28/31）, respectively. There was no difference of sensitivity and specificity between conventional endorectal ultrasound and endorectal elastography. The Kappa value was 0.441 and 0.689 for conventional endorectal ultrasound, endorectal elastography and pathology, respectively. Conclusion The consistency is better between conventional endorectal elastography and pathology for T4 rectal carcinomas. Endorectal elastography contributes to preoperative staging of T4 rectal carcinomas.

关 键 词：超声检查 弹性成像技术 直肠肿瘤 肿瘤分期 

分 类 号：R735.37[医药卫生—肿瘤] R445.1[医药卫生—临床医学]