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

2 de novembro de 2026 atualizado por: 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.

Visão geral do estudo

Descrição detalhada

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.

Tipo de estudo

Observacional

Inscrição (Estimado)

306

Contactos e Locais

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Contato de estudo

Estude backup de contato

Locais de estudo

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

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos e mais velhos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Tudo

Método de amostragem

Amostra Não Probabilística

População do estudo

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.

Descrição

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.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Modelos de observação: COHORT
  • Perspectivas de Tempo: PROSPECTIVE

Coortes e Intervenções

Grupo / Coorte
Intervenção / Tratamento
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

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Recurrence rate at 12 months
Prazo: 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

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
R0 resection rate
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: Periprocedural

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

Periprocedural
Total treatment cost
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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

Colaboradores e Investigadores

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Publicações e links úteis

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Publicações Gerais

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

20 de outubro de 2026

Conclusão Primária (Estimado)

20 de outubro de 2032

Conclusão do estudo (Estimado)

20 de outubro de 2036

Datas de inscrição no estudo

Enviado pela primeira vez

18 de outubro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

2 de novembro de 2026

Primeira postagem (Real)

4 de novembro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

4 de novembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

2 de novembro de 2026

Última verificação

1 de outubro de 2026

Mais Informações

Termos relacionados a este estudo

Plano para dados de participantes individuais (IPD)

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NÃO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

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