Endoscopy 2020; 52(S 01): S203
DOI: 10.1055/s-0040-1704633
ESGE Days 2020 ePoster Podium presentations
Saturday, April 25, 2020 09:30 – 10:00 Upper GI: Resection techniques 6 ePoster Podium 1
© Georg Thieme Verlag KG Stuttgart · New York

DUODENAL UNDERWATER ENDOSCOPIC MUCOSAL RESECTION IS SAFE AND EFFECTIVE FOR REMOVAL OF NON AMPULLARY DUODENAL TUMORS

D Kang
1   Pusan National University Yangsan Hospital, Yangsan-si, Korea, Republic of
,
S Kim
1   Pusan National University Yangsan Hospital, Yangsan-si, Korea, Republic of
,
HW Kim
1   Pusan National University Yangsan Hospital, Yangsan-si, Korea, Republic of
,
S Park
1   Pusan National University Yangsan Hospital, Yangsan-si, Korea, Republic of
,
JW Lee
1   Pusan National University Yangsan Hospital, Yangsan-si, Korea, Republic of
› Author Affiliations
Further Information

Publication History

Publication Date:
23 April 2020 (online)

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Aims Conventional endoscopic mucosal resection (EMR) and endoscopic submucosal dissection have been reported to be an effective therapeutic option in sporadic non ampullary duodenal tumors, but the rate of perforation is higher than that of other gastrointestinal lesion. A retrograde cohort study to investigate the effectiveness of underwater EMR (UW-EMR) was conducted in patients with nonampullary duodenal tumors.

Methods From Aug 2018 to Aug 2019, after medical chart and endoscopic report review, a total of 8 duodenal tumors were resected by UW-EMR. Location, size, pathology, complete resection rate, incidence of complications, length of procedures time and follow up months were evaluated. To evaluate local recurrence at the resection site, periodic follow-up endoscopic examination was undertaken in all of the patients. The first endoscopic examination was performed about 3~4 months after the endoscopic resection.

Results The mean age was 48.4 ± 9.36 years. The mean specimen size was 9.13 ± 4.53 mm. The 6 of 8 lesions were located in 2nd portion (75%), and 2 lesions in bulb (25%). In all patients, en-bloc resection was achieved. Histologic assessments of the removed specimens revealed as 6 adenomas(75%) and 2 NET (25%). 5 of 6 adenomas revealed as low grade dysplasia and another was high grade dysplasia. In one NET case, vertical margin was positive. No recurrence was observed during the mean follow up period of 3.7 ± 0.47 months. The mean procedural time was 6.44 ± 3.39 min. In all patients, no evidence of complication such as perforation or bleeding occurred.

Conclusions UW- EMR be considered safe and effective for the treatment of lesions located in duodenum.