经直肠彩色多普勒超声评价中低位直肠癌新辅助治疗效果的价值

Value of transrectum ultrasound in evaluating the effect of new adjuvant therapy in treating middle-low order rectal cancer

目的探讨经直肠彩色多普勒超声（TRUS）在中低位直肠癌新辅助治疗中的应用价值。方法82例中低位直肠癌患者于新辅助治疗前、后均分别行TRUS检查，所有病例经病理证实，将新辅助治疗前、后的TRUS检查结果进行对照分析。结果TRUS诊断直肠癌的准确率为97．6％（80／82）。新辅助治疗前经TRUS检出的80例患者，治疗后病灶上下范围及厚度均有不同程度缩小（均P〈0．05），病灶部位直肠周围淋巴结亦明显减少（P〈0．05）。彩色多普勒血流显像显示治疗后病灶内部血流分布与治疗前差异有统计学意义（P〈0．05），而新辅助治疗前后经TRUS检出的所有淋巴结中，仅5例内可见点状血流信号。结论TRUS检查能清晰显示直肠癌病灶回声、病灶内部血流分布及直肠周围淋巴结变化情况，对临床评价新辅助治疗效果及选择治疗方案、避免过度治疗有重要价值。

Objective To probe the value of transreetum ultrasound （TRUS） in evaluating the effect of new adjuvant therapy （NAT） in treating middle-low leveI rectal cancer （MLLRC）. Methods TRUS was used to examine 82 cases of MLLRC before and after NAT. All cases were pathologically confirmed. The results of TRUS before and after NAT were compared. Results The diagnostic rate of TRUS in MLLRC was 97.6% （80/82）. The up to down range and thickness of foci of 80 cases which were detected by TRUS before NAT showed different degree diminution after NAT（ P 〈0.05）. The number of lymph node around rectum decreased obviously （ P 〈0.05）. Only the lymph nodes of 5 cases of all lymph nodes detected by TRUS before and after NAT showed dot flow signal. Conclusions TRUS can clearly showed the MLLRC loci,internal flow signal and lymph nodes around rectum. This is of important value in evaluating the effect of NAT, choosing the therapeutic schedule and avoiding over therapy.