Hsieh Pao-Shiu, Changchien Chung Rong, Chen Jinn-Shiun, Tang Reiping, Chiang Jy-Ming, Yeh Chien-Yuh, Wang Jeng-Yi
Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, ROC.
Chang Gung Med J. 2003 Jul;26(7):474-8.
Preoperative clinical staging of rectal tumors is very important to allow surgeons make informed decisions about the types of surgeries that should be performed. Endorectal ultrasonography (ERUS) is one of the tools that has been commonly used in clinical staging of rectal tumors. The aim of this study was to evaluate the accuracy of the preoperative rectal tumor staging using endorectal ultrasonography in comparison with the postoperative histopathological staging.
The histopathology findings of the 67 patients with rectal tumors who underwent preoperative ERUS were reviewed and compared.
The overall accuracy of the ERUS assessment in the depth of tumor invasion was 88%, with overstaging at 9% and understaging at 3%. In determining perirectal nodal involvement of the 59 patients that were treated by radical rectal resection, the accuracy was 73%, with sensitivity of 77% and specificity of 70%.
ERUS is an objective, convenient, and highly accurate tool for preoperative rectal tumor staging, thus helping surgeons to determine the appropriate treatment modalities.
直肠肿瘤的术前临床分期对于外科医生就应实施的手术类型做出明智决策非常重要。直肠内超声检查（ERUS）是临床直肠肿瘤分期常用的工具之一。本研究的目的是评估与术后组织病理学分期相比，使用直肠内超声检查进行术前直肠肿瘤分期的准确性。
回顾并比较了67例接受术前ERUS检查的直肠肿瘤患者的组织病理学结果。
ERUS评估肿瘤浸润深度的总体准确率为88%，高估9%，低估3%。在确定59例行根治性直肠切除术患者的直肠周围淋巴结受累情况时，准确率为73%，敏感性为77%，特异性为70%。
ERUS是术前直肠肿瘤分期的一种客观、便捷且高度准确的工具，有助于外科医生确定合适的治疗方式。
