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  • Title: [Intrarectal 3-dimension ultrasonography in preoperative staging of rectal carcinoma].
    Author: Dai Y.
    Journal: Zhonghua Wai Ke Za Zhi; 1993 Dec; 31(12):743-5. PubMed ID: 8033704.
    Abstract:
    From Nov. 1991 to Dec. 1992 63 patients were examined by preoperative intrarectal 3-dimension ultrasonography (IR3DUS) for the staging of their rectal carcinoma. IR3DUS assessed the tumor penetration depth with an accuracy of 93.65 percent (P < 0.001, Kappa statistic). IR3DUS predicted lymphatic metastasis with an accuracy of 92.1 percent vs. 63.6% by CT. Correlated with histopathologic findings, the overall accuracy of the preoperative staging utilizing IR3DUS was 93.65 percent (P < 0.001, Kappa statistic). Therefore, IR3DUS is considered a very useful tool for the assessment of the depth of cancer invasion in the rectal wall and perirectal lymph node metastasis.
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