Usefulness of two-stage endoscopic resection (TSER) for superficial non-ampullary duodenal epithelial tumor (SNADET)

Usefulness of two-stage endoscopic resection (TSER) for superficial non-ampullary duodenal epithelial tumor (SNADET) - Usefulness of two-stage endoscopic resection (TSER) for superficial non-ampullary duodenal epithelial tumor (SNADET)

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000057368

Enrollment

Registered

2025-03-25

Start date

2025-03-25

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

superficial non-ampullary duodenal epithelial tumor

Interventions

two-stage endoscopic resection

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Cases of large, raised SNADETs that occupy the lumen and do not allow space for manipulation during preoperative endoscopy. Patients who have given written consent to participate in the clinical study.

Exclusion criteria

Exclusion criteria: 1) Endoscopically diagnosed cases with submucosal invasion 2) Local remnants after endoscopic resection, postoperative anastomotic lesions 3) Cases of familial colorectal adenomatosis 4) Cases with serious complications that do not tolerate general anesthesia 5) Women of childbearing potential, pregnant, or lactating women 6) Other cases in which participation in the study is deemed inappropriate by the physician in charge

Design outcomes

Primary

Measure	Time frame
R0 resection rate	—

Secondary

Measure	Time frame
Procedure time Adverse event Length of hospital stay	—

Countries

Japan

Contacts

Public ContactNao Takeuchi

NTT Medical Center Tokyo Department of Gastrointestinal Endoscopy

naotakeuchi0222@gmail.com03-3448-6111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026