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Clinical Outcome of Endoscopic Submucosal Dissection for the Treatment of the Adenocarcinoma at Esophagogastric junction

초록/요약

ABSTRACT Background and aims: The esophagogastric junction (EGJ) has been considered as a difficult location for endoscopic treatment of tumors, due to its narrow lumen and sharp angle. However, Endoscopic submucosal dissection (ESD) was recently introduced as treatment option for superficial adenocarcinoma of the EGJ. The aim of the present study was to report the clinical outcome of endoscopic submucosal dissection (ESD) for the management of adenocarcinoma of EGJ. Methods: A retrospective study included 39 patients with superficial EGJ adenocarcinoma who underwent ESD between May 2005 and May 2015 at the Korea University Guro Hospital. The size of the lesions, en bloc resection rate, complete resection rate, local recurrence, and complications were assessed. Results: En bloc resection rate was 100%, complete resection rate was 74%, and curative resection rate was 66%. Multivariate logistic regression analyses revealed that tumor size (> 20mm) and tumor invasion depth (submucosa) were associated with incomplete resection, but the result showed no statistical significance. Conclusion: Although surgery for a non-curative resection remains a standard treatment, superficial EGJ cancer can be properly managed by ESD if curative resection is achieved. Key words: endoscopic submucosal dissection, adenocarcinoma, esophagogastric junction

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초록/요약

국문초록 배경과 목적: 식도위접합부는 좁은 내강과 변화가 급격한 각도 때문에 종양을 내시경적으로 치료하기에 어려운 위치로 생각되어 왔다. 그러나 최근에 내시경점막하박리술이 식도위접합부 선암의 치료방법으로 소개되었다. 본 연구에서는 식도위접합부 선암의 치료에 있어서 내시경점막하박리술의 임상결과를 평가하고자 하였다. 방법: 2005년 5월과 2015년 5월 사이에 고려대학교 구로병원에서 식도위접합부 선암에 대하여 내시경점막하박리술 치료를 받은 39명의 환자의 의무기록을 후향적으로 분석하였다. 결과: 일괄절제율은 100%, 완전절제율은 74%, 치료절제율은 66%였다. 다변량 회귀분석결과 종양크기(>20mm)와 종양침범깊이(점막하)가 불완전절제와 관련이 있었으나, 결과가 통계적 유의성을 나타내지 못하였다. 결론: 식도위접합부 종양은 치료절제가 가능하다면 내시경점막절제술이 새로운 대안적 치료 방법으로 고려될 수 있을 것이다. 주요단어: 내시경점막박리술, 선암, 식도위접합부

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목차

Contents
Ⅰ. Introduction 1

Ⅱ. Patients and Methods 2
Ⅱ.1 Patients 2
Ⅱ.2 Endoscopic mucosal dissection procedures 2
Ⅱ.3 Outcome Parameters 3
Ⅱ.4 Follow-Up 4
Ⅱ.5 Statistical Analysis 5

Ⅲ. Results 6
Ⅲ.1 Clinicopathologic Characteristics of Patients and Gastric Cardia
Tumors 6
Ⅲ.2 ESD Outcomes 6
Ⅲ.3 Multivariate Analysis for Factors Influencing Incomplete Resection 7
Ⅲ.4 Complications 7
Ⅲ.5 Operation and Local Recurrence 7

Ⅳ. Discussion 9

Ⅴ. References 12

Ⅵ. Tables 14

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