Open Access
CC BY-NC-ND 4.0 · Endosc Int Open 2022; 10(03): E254-E261
DOI: 10.1055/a-1672-3797
Original article

Sporadic non-ampullary duodenal adenoma with low-grade dysplasia: Natural history and clinical management

Yohei Ikenoyama
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
2   Department of Endoscopy, Mie University Graduate School of Medicine, Mie, Japan
,
Shoichi Yoshimizu
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
,
Ken Namikawa
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
,
Yoshitaka Tokai
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
,
Yusuke Horiuchi
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
,
Akiyoshi Ishiyama
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
,
Toshiyuki Yoshio
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
,
Toshiaki Hirasawa
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
,
Junko Fujisaki
1   Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
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Abstract

Background and study aims Management strategies for sporadic non-ampullary duodenal adenoma with low-grade dysplasia (LGD) are not well established. This study aimed to analyze progression factors and determine suitable treatment strategies for LGD lesions.

Patients and methods We retrospectively analyzed consecutive LGD lesions (n = 125) in patients followed up for ≥ 6 months (median, 45 months) and evaluated the changes in clinicopathological features during follow-up. All LGD lesions were classified into two groups: stable LGD (no increase or < 5 mm increase in tumor size, with unchanged histological dysplasia grade) and progressive LGD (≥ 5 mm increase in tumor size and/or progression to high-grade dysplasia or adenocarcinoma).

Results Eighty-six LGD were classified as stable and 39 as progressive. Location on the oral side of the papilla of Vater, large initial tumor size ( ≥ 10 mm), macroscopically complex type, red color, and nodularity were significantly frequent in progressive LGD than in stable LGD. In multivariate analysis, large initial tumor size (odds ratio [OR], 10.2; 95 % confidence interval [CI], 3.3–32.1; P < 0.001) and location on the oral side of the papilla of Vater (OR: 1.8, 95 % CI: 1.4–12.5; P = 0.012) were significant factors for progression. Moreover, initial tumor size < 5 mm rarely progressed (0%–3.9 %); however, initial tumor size ≥ 20 mm and 10–19 mm located on the oral side of the papilla of Vater had a high-risk progression rate (75.0–85.7 %).

Conclusions According to the risk stratification of progression factors by initial tumor size and location, we can determine suitable treatment indications for LGD lesions.



Publikationsverlauf

Eingereicht: 09. Juni 2021

Angenommen: 17. September 2021

Artikel online veröffentlicht:
14. März 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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