耦合剂充盈法腔内超声对直肠癌术前T分期的诊断价值

Value of endorectal ultrasonography with coupling gel intrarectal filling in T stage of rectal cancer

目的评价耦合剂充盈法腔内超声在直肠癌术前T分期诊断中的价值。方法对115例直肠癌患者行耦合剂充盈法腔内超声检查,进行术前T分期,并与手术及术后病理分期对照。结果115例直肠癌术前T分期诊断总符合率89.57%,T1、T2、T3、T4期诊断灵敏度和特异度分别为93.10%、61.11%、96.61%、88.89%和97.67%、96.91%、89.29%、99.06%;过度判断6.96%(8/115),判断不足3.48%(4/115)。结论耦合剂充盈法腔内超声在直肠癌术前T分期诊断中有重要价值。

Objective To evaluate the role of endorectal ultrasonography with coupling gel intrarectal filling in preoperative T stage of rectal cancer.Methods One hundred and fifteen patients with rectal cancer underwent endorectal ultrasonography with coupling gel intrarectal filling.The preoperative T stage according to ultrasonic manifestations was compared with histological findings.Results The total diagnostic accordance rate of preoperative T stage by endorectal ultrasonography with coupling gel intrarectal filling was 89.57%.The sensitivity of ultrasonography for T1,T2,T3 and T4 was 93.10%,61.11%,96.61%,88.89%,while the specificity was 97.67%,96.91%,89.29%,99.06%,respectively.The overstaging rate of ultrasonography was 6.96%（8/115）,and the understaging rate was 3.48%（4/115）.Conclusion Endorectal ultrasonography with coupling gel intrarectal filling is a valuable diagnostic method for T stage of rectal cancer.