Diagnosis of mural invation and lymph node metastasis of rectal cancer by endorectal ultrasonography.

概要

論文の詳細を見る
Endorectal ultrasonography (ERUS) was applied to the cases of pm rectal cancer to diagnose the invasion of the rectal wall and the metastasis to the lymph nodes. With ERUS, the forth stratum of the proper muscle (PM) was recognized to be divided into 3 substrata and the fact made it possible to devide PM into 3 substrata of PM1, PM2 and PM3. Each of the data was also analysed compared with the pathological data. As the result, the diagnosis of the substrata invasion was possible in 14 cases among 19 cases, and the rate of correct diagnosis was 57%. Using ERUS, it was also possible to recognize pm cancer preoperatively in all of the 17 cases. As for the diagnosis of pararectal lymph node metastasis, the sensitivity was 80.6% (29/36), the specificity 65.0% (26/40) and the accuracy 72.4% (55/76) respectively. <BR>The cases with less wall invasion than PM2 and without lymph node metastasis are considered to be good candidates for autonomic nerve preservation operation and the ERUS has the ability to help deciding the operational choice by giving the data.
日本大腸肛門病学会の論文