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

2 november 2026 bijgewerkt door: 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.

Studie Overzicht

Gedetailleerde beschrijving

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.

Studietype

Observationeel

Inschrijving (Geschat)

306

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Contact Back-up

Studie Locaties

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

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar en ouder (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Bemonsteringsmethode

Niet-waarschijnlijkheidssteekproef

Studie Bevolking

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.

Beschrijving

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.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Observatiemodellen: COHORT
  • Tijdsperspectieven: PROSPECTIVE

Cohorten en interventies

Groep / Cohort
Interventie / Behandeling
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

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Recurrence rate at 12 months
Tijdsspanne: 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

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
R0 resection rate
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: Periprocedural

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

Periprocedural
Total treatment cost
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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

Medewerkers en onderzoekers

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Publicaties en nuttige links

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Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

20 oktober 2026

Primaire voltooiing (Geschat)

20 oktober 2032

Studie voltooiing (Geschat)

20 oktober 2036

Studieregistratiedata

Eerst ingediend

18 oktober 2026

Eerst ingediend dat voldeed aan de QC-criteria

2 november 2026

Eerst geplaatst (Werkelijk)

4 november 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

4 november 2026

Laatste update ingediend die voldeed aan QC-criteria

2 november 2026

Laatst geverifieerd

1 oktober 2026

Meer informatie

Termen gerelateerd aan deze studie

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

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