磁共振成像评估进展期胃癌的术前分期

Evaluation of preoperative staging in advanced gastric cancer with MRI.

作者信息

Tang G Y, Guo Q L, Xin P P

机构信息

Guang-Yu Tang, Qing-Lu Guo, Ping-Ping Xin, Section of MRI, the Second Affiliated Hospital, Jiangxi Medical College, Nanchang 330006, Jiangxi Province, China.

出版信息

World J Gastroenterol. 1997 Jun 15;3(2):95-7. doi: 10.3748/wjg.v3.i2.95.

DOI:10.3748/wjg.v3.i2.95

PMID:27041955

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4801940/

Abstract

AIM

To evaluate the application of magnetic resonance imaging (MRI) to the preoperative staging of advanced gastric cancer.

METHODS

An MRI (SE sequence) was preoperatively performed on 34 patients with advanced gastric cancer. The tumors were located at the cardia fundus in 11 patients, the corpus in 14, the antrum in ten and throughout the entire stomach in two. The images were analyzed and staged on the basis of the criteria proposed by Matsushita M. The results were compared with the corresponding histopathologic findings to analyze the rate of diagnostic accordance.

RESULTS

The diagnostic rate accuracy by MRI was 77.8% (seven out of nince) for T2 tumors; 77.3% (17 out of 22) for T3 tumors and 100% (three out of three) for T4 tumors, with the overall accuracy equaling 79.4%. When grades T3 and T4 tumors were considered as a single group to determine the presence or absence of extraserosal invasion using MRI technology, the diagnostic accuracy was 88.3%. Statistically, MRI staging showed a significant correlation with the corresponding histopathologic staging using the Spearman correlation test (rs' = 0.743, P < 0.01). When the concordance between MRI and histopathologic staging results were studied according to tumor location, the staging accuracy was highest (90.9%) in tumors located in gastric cardia fundus.

CONCLUSION

MR imaging is moderately valuable when staging advanced gastric cancer, especially for tumors located in gastric cardia fundus.

摘要

目的

评估磁共振成像（MRI）在进展期胃癌术前分期中的应用。

方法

对34例进展期胃癌患者术前行MRI（SE序列）检查。肿瘤位于贲门胃底11例，胃体14例，胃窦10例，全胃2例。根据松下正提出的标准对图像进行分析和分期。将结果与相应的组织病理学结果进行比较，分析诊断符合率。

结果

MRI对T2期肿瘤的诊断准确率为77.8%（9例中的7例）；T3期肿瘤为77.3%（22例中的17例）；T4期肿瘤为100%（3例中的3例），总体准确率为79.4%。将T3和T4期肿瘤视为一组，采用MRI技术判断是否存在浆膜外侵犯，诊断准确率为88.3%。统计学分析，采用Spearman相关检验，MRI分期与相应的组织病理学分期有显著相关性（rs' = 0.743，P < 0.01）。根据肿瘤位置研究MRI与组织病理学分期结果的一致性时，位于贲门胃底的肿瘤分期准确率最高（90.9%）。