• 1. Department of Anal-colorectal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China;2. Department of Ultrasonic Diagnosis, West China Hospital, Sichuan University, Chengdu 610041, China;
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Objective  To investigate the influence of preoperative assessment by transrectal ultrasound (TRUS) on the development of operative procedures for rectal cancer.
Methods  A total of 110 patients with pathologically proven rectal cancer and distance between tumor to dentate line ≤10 cm were enrolled and randomized into group A (n=55) and group B (n=55) according to a computer-generated random sequence. Both TRUS staging and Clinical Staging System (CS staging) were performed preoperatively in group A, while only CS staging was conducted in group B. Preoperative TRUS stage, CS stage, and proposed operative procedures were recorded to compare with the postoperative pathological stage and practical operative procedures.
Results  A total of 99 patients were assessed. They were randomized into group A (n=49) and B (n=50), and there were no significant differences in baseline characteristics between the two groups. The difference in staging accuracy was statistically significant (P=0.000) between group A (91.8%) and group B (48.0%). Statistically significant improvement (P=0.013) in the accuracy of proposing operative procedures for rectal cancer was observed in group A (93.9%) compared with group B (76.0%).
Conclusion   TRUS is evidently superior to CS staging in preoperative assessment for rectal cancer, and may remarkably enhance the accuracy of proposing operative procedures. Therefore, TRUS is valuable in preoperative assessment which may help to guide the selection of operative procedures for rectal cancer surgery.

Citation: WANG Xiaodong,LV Donghao,CUI Beibei,SHI Yingyu,HE Fan,LI Li. Preoperative Application of Transrectal Ultrasound in Predicting Operative Procedures for Rectal Cancer: A Randomized Controlled Trial. Chinese Journal of Evidence-Based Medicine, 2008, 08(12): 1043-1046. doi: 10.7507/1672-2531.20080231 Copy

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