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Endoscopic Papillectomy Versus Surgery for Ampullary Tumors: A Prospective Multicenter Cohort Study

2. November 2026 aktualisiert von: Qilu Hospital of Shandong University

Investigation of the Indications and Clinical Outcomes of Endoscopic Papillectomy Versus Surgery for Ampullary Tumors

The aim of this study is to compare the efficacy and safety of endoscopic treatment (endoscopic papillectomy [EP] with or without intraductal radiofrequency ablation [RFA]) and surgical treatment (transduodenal ampullectomy [TSA] and pancreatoduodenectomy [PD]) in patients with ampullary tumors (ampullary adenoma and early ampullary carcinoma), focusing on residual disease, recurrence, postoperative complications, and overall costs.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This is a multicenter, two-arm, prospective cohort study. The diagnosis of ampullary adenoma must be confirmed by biopsy.

The endoscopic treatment group receives EP; patients without intraductal extension receive EP alone, while patients with intraductal extension receive additional RFA in the same or a subsequent session. The surgical treatment group receives TSA or PD. Patients are followed up at 3, 6, and 12 months after the initial treatment, then annually for at least 5 years, with side-viewing duodenoscopy, targeted biopsy, and CT assessment. To control confounding between the two groups, propensity score matching and inverse probability of treatment weighting will be applied.

Studientyp

Beobachtungs

Einschreibung (Geschätzt)

306

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studieren Sie die Kontaktsicherung

Studienorte

    • Shandong
      • Jinan, Shandong, China, 250012
        • Qilu Hospital of Shandong University
        • Kontakt:

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Probenahmeverfahren

Nicht-Wahrscheinlichkeitsprobe

Studienpopulation

Adult patients with histologically confirmed ampullary adenoma or early ampullary carcinoma (Tis/T1) without invasion into the duodenal muscularis propria, staged M0/N0 by EUS , MRCP and CT , with intraductal tumor extension ≤ 20 mm on EUS, MRCP, or IDUS, undergoing endoscopic papillectomy or surgery.

Beschreibung

Inclusion Criteria:

  1. Patients aged ≥18 years
  2. Patients with histologically confirmed ampullary adenoma or early ampullary carcinoma (Tis/T1) based on endoscopic biopsy (i.e., without tumor invasion into the duodenal muscularis propria).
  3. Preoperative staging by endoscopic ultrasound (EUS) , magnetic resonance cholangiopancreatography (MRCP) or computed tomography (CT) showing no distant metastasis (M0) and no lymph node metastasis (N0).
  4. Intraductal tumor extension (ITE) ≤ 20 mm assessed by EUS, MRCP or Intraductal ultrasound (IDUS ).
  5. Planned to undergo EP, with or without intraductal RFA, or surgical treatment (TSA or PD).
  6. Patients who provide written informed consent.

Exclusion Criteria:

  1. Patients unable to tolerate general anesthesia or surgery.
  2. Ectopic duodenal papilla.
  3. Contraindications to endoscopic procedures (e.g., severe esophageal stenosis, gastric outlet obstruction, or other conditions precluding endoscopic access to the papilla).
  4. Major upper abdominal surgery or previous biliary surgery history.
  5. Uncorrectable coagulopathy (INR > 1.5) or thrombocytopenia (platelet count < 50,000/μL), or inability to withhold antithrombotic (anticoagulant or antiplatelet) therapy for the planned endoscopic or surgical procedure..
  6. Pregnant or lactating women.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Beobachtungsmodelle: COHORT
  • Zeitperspektiven: PROSPECTIVE

Kohorten und Interventionen

Gruppe / Kohorte
Intervention / Behandlung
Endoscopic treatment group

Patients undergoing EP with or without RFA.

Endoscopic papillectomy (EP); EP combined with intraductal RFA for lesions with intraductal tumor extension.

Surgical treatment group

Patients undergoing surgical treatment.

TSA or PD

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Recurrence rate at 12 months
Zeitfenster: At 12 months after the initial treatment

Recurrence confirmed by endoscopic biopsy after an interval ≥ 3 months from the end of treatment, assessed at the 12-month follow-up.

At 12 months after the initial treatment

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
R0 resection rate
Zeitfenster: Periprocedural

Proportion of patients with complete resection achieved at the first endoscopic or surgical intervention and confirmed by histology (negative margins).

Periprocedural
Procedure-related adverse event rate
Zeitfenster: Up to 90 days after the initial treatment

Proportion of patients who experienced at least one adverse event attributable to the initial endoscopic or surgical procedure within 30 days after the procedure, irrespective of severity.

Up to 90 days after the initial treatment
Recurrence rate at 6 months
Zeitfenster: At 6 months after the initial treatment

Recurrence confirmed by endoscopic biopsy after an interval ≥ 3 months from the end of treatment, assessed at the 6-month follow-up.

At 6 months after the initial treatment
Residual lesion rate
Zeitfenster: Up to 3 months after the initial treatment

Presence of residual adenoma tissue at the next endoscopy after treatment.

Up to 3 months after the initial treatment
Clinical success rate
Zeitfenster: Up to 5 years after the initial treatment

Proportion of patients who achieved complete excision of the lesion (regardless of the number of procedures) with no histologically confirmed adenoma regrowth, no evidence of invasive cancer, and without the need for surgical resection, during follow-up up to 5 years after the initial treatment.

Up to 5 years after the initial treatment
Endoscopic treatment failure rate
Zeitfenster: Up to 12 months after the initial treatment

Inability to completely resect the lesion endoscopically (regardless of the number of procedures), histopathologically invasive malignancy, or recurrence no longer amenable to endoscopic treatment.

Up to 12 months after the initial treatment
Total number of readmissions within 12 months
Zeitfenster: Up to 12 months after the initial treatment

All readmissions due to disease-related symptoms (e.g., cholangitis, pancreatitis, obstructive jaundice) or treatment-related events (e.g., bleeding, perforation, anastomotic problems).

Up to 12 months after the initial treatment
Technical success rate
Zeitfenster: Periprocedural

Proportion of patients in whom the planned procedure was completed as intended.

Periprocedural
Total treatment cost
Zeitfenster: Up to 12 months after the initial treatment

All direct medical costs from admission to 12 months after the initial treatment (including procedure, anesthesia, hospitalization, medication, examinations, and readmission costs).

Up to 12 months after the initial treatment
Index hospitalization length of stay
Zeitfenster: Periprocedural

Number of calendar days from the date of admission for the initial treatment to the date of discharge for the initial treatment,including the day of admission

Periprocedural
Total length of stay within 12 months
Zeitfenster: Up to 12 months after the initial treatment

Total number of calendar days spent in hospital within 12 months after the initial treatment, including the index hospitalization and all readmissions due to disease-related symptoms or treatment-related events.

Up to 12 months after the initial treatment
Postprocedural pancreatitis rate
Zeitfenster: Up to 90 days after the initial treatment

Defined by two of three criteria: characteristic abdominal pain; amylase or lipase > 3× upper limit of normal; imaging features of pancreatitis; severity graded mild / moderate / severe per protocol.

Up to 90 days after the initial treatment
Postprocedural bleeding rate
Zeitfenster: Up to 90 days after the initial treatment

Proportion of patients with clinically significant post-procedural bleeding within 30 days after the procedure, defined as any of the following after achieving primary haemostasis: overt bleeding symptoms (hematemesis, melena, hematochezia, or blood aspirated via nasogastric tube); haemodynamic instability attributable to bleeding; a decrease in haemoglobin greater than 2 g/dL; or direct endoscopic evidence of bleeding from the papillectomy site.

Up to 90 days after the initial treatment
Postprocedural perforation rate
Zeitfenster: Up to 90 days after the initial treatment

Direct visualization of a transmural defect during endoscopy, or radiographic evidence of extraluminal free air on abdominal CT or plain radiograph.

Up to 90 days after the initial treatment
Postprocedural cholangitis rate
Zeitfenster: Up to 90 days after the initial treatment

New onset temperature >38 °C for more than 24 hours combined with cholestasis. Severity will be graded separately according to the TG18 severity classification (Grade I / II / III) and reported descriptively.

Up to 90 days after the initial treatment
Cumulative recurrence rate
Zeitfenster: Through study completion, an average of 5 years

Cumulative recurrence during annual follow-up up to 5 years

Through study completion, an average of 5 years

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Mitarbeiter

Ermittler

  • Hauptermittler: Zhen Li, MD, Qilu Hospital of Shandong University

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Allgemeine Veröffentlichungen

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

20. Oktober 2026

Primärer Abschluss (Geschätzt)

20. Oktober 2032

Studienabschluss (Geschätzt)

20. Oktober 2036

Studienanmeldedaten

Zuerst eingereicht

18. Oktober 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

2. November 2026

Zuerst gepostet (Tatsächlich)

4. November 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

4. November 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

2. November 2026

Zuletzt verifiziert

1. Oktober 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • 2026SDU-QILU-6

Plan für individuelle Teilnehmerdaten (IPD)

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NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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