Hamada S, Akahoshi K, Chijiiwa Y, Sasaki I, Nawata H
Third Department of Internal Medicine, Kyushu University, Fukuoka, Japan.
Surgery. 1998 Mar;123(3):264-9.
Our objective was to examine the accuracy of a 15 MHz ultrasound miniprobe in the pre-operative staging of colorectal cancer by assessing the depth of tumor infiltration and involvement of pericolonic lymph nodes.
Thirty-three patients with colorectal cancer who underwent ultrasonography with a miniprobe were studied prospectively. The results of this imaging were compared with the histologic findings of the resected specimens.
The accuracy of the miniprobe for depth of invasion (T category) was 82% (27 of 33) for all tumors, 76% (13 of 17) in pT1 cases, and 88% (14 of 16) in pT2 to pT4 cases. The accuracy of the miniprobe for nodal staging (N category) was 87% (26 of 30) overall. The sensitivity was 63% (5 of 8), the specificity was 95% (21 of 22), the positive predictive value was 83% (5 of 6), and the negative predictive value was 88% (21 of 24).
The miniprobe is an accurate method for the preoperative TN staging of colorectal cancer. We recommend its preoperative use because the results may influence the surgical approach.
我们的目的是通过评估肿瘤浸润深度和结肠旁淋巴结受累情况，来检验15兆赫超声微型探头在结直肠癌术前分期中的准确性。
对33例行微型探头超声检查的结直肠癌患者进行前瞻性研究。将该影像学检查结果与切除标本的组织学检查结果进行比较。
微型探头对所有肿瘤浸润深度（T分期）的准确率为82%（33例中的27例），pT1期病例为76%（17例中的13例），pT2至pT4期病例为88%（16例中的14例）。微型探头对淋巴结分期（N分期）的总体准确率为87%（30例中的26例）。敏感性为63%（8例中的5例），特异性为95%（22例中的21例），阳性预测值为83%（6例中的5例），阴性预测值为88%（24例中的21例）。
微型探头是结直肠癌术前TN分期的一种准确方法。我们建议术前使用，因为其结果可能会影响手术方式。
