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目的：通过腔内超声估价直肠癌浸润情况。方法：疑有直肠癌患者２１例，术前行直肠腔内超声检查。结果：经手术和病理证实为直肠癌患者２１例，直肠腔内超声癌灶检出率为９０．５％，超声判断癌灶浸润深度与病理诊断符合率为９４．７％。结论：直肠腔内超声检查是判断直肠癌浸润深度、侵及肠壁周径、纵行长度的理想手段。若每位直肠癌患者在术前常规行腔内超声检查，不仅为患者术式选择提供了客观依据，亦为患者的早期直肠癌行内镜局灶切除成为可能。
Objective: To assess the infiltration of rectal cancer by intraluminal ultrasound. METHODS: Twenty-one patients with suspected rectal cancer underwent transrectal ultrasonography before operation. Results: 21 cases of rectal cancer were confirmed by operation and pathology. The detection rate of intratumoral ultrasound lesions was 90.5%. The coincidence rate of ultrasound indentification depth and pathological diagnosis was 94.7%. Conclusion: Rectal ultrasonography is an ideal method for judging the depth of infiltration of the rectal cancer, invading the perimeter of the intestinal wall, and the longitudinal length. If each patient with rectal cancer undergoes preoperative routine intraluminal ultrasonography, it not only provides an objective basis for the selection of the patient’s surgical procedure, but also makes it possible to perform endoscopic resection of the early rectal cancer in the patient.