直肠腔内 360° 超声和腔内矢状面超声在全段直肠癌术前 TN 分期和环周切缘中的应用价值.

Objective To evaluate the value of three-dimensional transrectal ultrasound（3D-ERUS）and sagittal transrectal ultrasound in preoperative TN-staging and circumferential resection margin (CRM) of rectal cancer. Methods A total of 111 patients with rectal cancer were selected from our hospital. Among them, 71cases of middle and lower rectal cancer were examined by 3D-ERUS，40 cases of upper rectal cancer were examined by sagittal transrectal ultrasound. The pathological results were used to compare the accuracy of rectal cancer TN-staging and CRM using 3D-ERUS and sagittal transrectal ultrasound. Results The overall accuracy of preoperative T/N-stage of rectal cancer were 87.4%（kappa=0.819，P＜0.001）and74.8%(kappa=0.572，P＜0.001), respectively，and the accuracy of CRM was 94.6%. Conclusions The preoperative evaluation of total rectal cancer by 3D-ERUS and sagittal transrectal ultrasound has high diagnostic accuracy and consistency.Combined application can improve the diagnostic value of transrectal ultrasound in preoperative staging of total rectal cancer. [ABSTRACT FROM AUTHOR]