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术前准确评估肿瘤对肠壁侵犯程度及区域淋巴结转移情况，才能为直肠癌病人制定最佳治疗方案。该文就直肠腔内超声（ＴＲＵＳ）、盆腔ＣＴ及ＭＲＩ在评估直肠癌术前分期方面的准确率和临床应用价值进行分析和比较。该研究共选取１９９７～１９９８年确诊并手术治疗的８９例直肠
Preoperative assessment of tumor invasion of the intestinal wall and regional lymph node metastasis can accurately determine the best treatment for patients with rectal cancer. This article analyzes and compares the accuracy and clinical value of rectal ultrasound (TRUS), pelvic CT and MRI in the evaluation of preoperative staging of rectal cancer. The study selected 89 cases of rectum diagnosed and treated surgically from 1997 to 1998