Pessaux P, Burtin P, Arnaud J P
Département de chirurgie viscérale, CHU Angers, 4, rue Larrey, 49033 Angers, France.
Ann Chir. 2001 Feb;126(1):10-7. doi: 10.1016/s0003-3944(00)00451-x.
The treatment of rectal carcinoma is mainly determined by its local extension. Preoperative staging of rectal carcinoma was assessed by different methods: digital rectal examination, transrectal ultrasound, computed tomography, and magnetic resonance imaging. Digital rectal examination had a diagnostic accuracy between 68 and 83 per cent. The accuracy of transrectal ultrasound was between 67 and 93 per cent for tumor staging and between 62 and 88 per cent for lymph node staging. The accuracy of computed tomography was between 33 and 77 per cent for tumor staging and between 22 and 73 per cent for lymph node staging. The overall accuracy of magnetic resonance imaging with body coil was between 59 and 95 per cent, and between 39 and 95 per cent for lymph node staging. Use of an endorectal coil allows a slightly more consistent degree of accuracy, with tumor staging accuracy between 66 and 91 per cent, and lymph node staging accuracy between 72 and 79 percent. Preoperative radiation therapy makes transrectal ultrasound and computed tomography less effective as staging techniques.
直肠癌的治疗主要取决于其局部浸润情况。直肠癌的术前分期可通过不同方法进行评估：直肠指诊、经直肠超声、计算机断层扫描和磁共振成像。直肠指诊的诊断准确率在68%至83%之间。经直肠超声对肿瘤分期的准确率在67%至93%之间，对淋巴结分期的准确率在62%至88%之间。计算机断层扫描对肿瘤分期的准确率在33%至77%之间，对淋巴结分期的准确率在22%至73%之间。体线圈磁共振成像的总体准确率在59%至95%之间，对淋巴结分期的准确率在39%至95%之间。使用直肠内线圈可使准确率略为一致，肿瘤分期准确率在66%至91%之间，淋巴结分期准确率在72%至79%之间。术前放射治疗会降低经直肠超声和计算机断层扫描作为分期技术的有效性。
