经直肠双平面超声联合经直肠三维超声在直肠癌术前分期中的应用

目的评价经直肠双平面超声联合经直肠三维超声在直肠癌术前分期中的应用价值。方法 73例直肠癌患者均行经直肠超声检查(TRUS),其中33例行CT检查,37例行MRI检查,检查后分别依据TRUS、CT、MRI对直肠癌进行T分期及N分期,并与术后病理对照。结果所有患者经手术证实为直肠癌,并获得术后病理分期,术前TRus、cT、MRI的T分期的准确度分别为68.49%(50/73)、42.42%(14/33)、64.86%(24/37),TRUS与CT差别有统计学意义(P=0.02),而TRUS与MRI差别无统计学意义(P=0.40);术前TRUS、CT、MRI的N分期的准确度分别为63.01%(46/73)、66.67%(22/33)、81.08%(30/37)TRUS与CT差别无统计学意义(P=0.41),而TRUS与MRI差别有统计学意义(P=0.014)。结论 TRUS在评估直肠癌局部浸润深度上较CT更为准确,在评估直肠癌淋巴结转移方面MRI更为优越。

Double-plane and three-dimensional transrectal ultrasonography in rectal cancer staging

Objective To evaluate the efficacy of double-plane and three-dimensional transrectal ultrasonography for staging rectal carcinoma.Methods 73 patients with rectal cancer underwent preoperative transrectal ultrasound（TRUS）.CT and MRI were also performed on 33 and 37 patients,respectively.Tumor and nodal staging were compared with the postoperative pathology. Results The accuracy of tumor staging was significantly（P=0.020）higher on TRUS（68.49%,50/73）than that on CT（42.42%, 14/33）and not significantly（P=0.400）different from that on MRI（64.86%,24/37）.The accuracy of nodal staging was significantly （P=0.014）lower on TRUS（63.01%,46/73）than that on MRI（81.08%,30/37）and was not significantly（P=0.41）different from that on CT（66.67%,22/33）.Conclusion TRUS is more accurate than CT in the staging of rectal cancer whereas MRI is superior in the assessment of lymph node metastasis.