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评估研究直肠癌术前分期方法。方法:对80例直肠癌病人使用术前腔内超声、CT、MRI检查肿瘤病变的深度和直肠指检及术后病理报告在评估病变深度的正确率。结果:直肠腔内超声检查直肠癌浸润深度的正确诊断率为89.3％,对早期直肠癌的正确诊断率为83.3％。CT正确诊断率为86.4％,早期癌的正确诊断率为66.6％。MRI的正确诊断率为90％,早期癌的正确诊断率为83.3％。直肠指检的诊断正确率仅为52.5％。结论:直肠内超声可分辨直肠壁各层的细微结构,可作为直肠癌术前分期的首选诊断方法。
To evaluate the preoperative staging of rectal cancer. METHODS: The accuracy of the depth of lesions was evaluated in 80 rectal cancer patients using preoperative intra-cavity sonography, CT, MRI to examine the depth of tumor lesions, digital rectal examination, and postoperative pathology reports. Results: The correct diagnosis rate of rectal cancer infiltration depth was 89.3% in rectal ultrasonography and 83.3% in early rectal cancer. The correct diagnosis rate of CT was 86.4%, and the correct diagnosis rate of early cancer was 66.6%. The correct diagnosis rate of MRI was 90%, and the correct diagnosis rate of early cancer was 83.3%. The diagnostic accuracy of digital rectal examination is only 52.5%. Conclusion: Rectal ultrasound can distinguish the fine structure of each layer of rectal wall and can be used as the first choice for the preoperative staging of rectal cancer.