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Assessment of SMI (Superb Microvascular Imaging) for Characterising the Endocystic Material of Papillary Intraductal Mucinous Pancreatic Tumours (PIMPT) (ENDOKYSMILE)

There are many types of pancreatic cysts, and papillary intraductal mucinous pancreatic tumours (PIMPTs) are among the most common.

PIMPTs carry a risk of progressing to a cancerous lesion. To assess this risk, the key examination involves performing an endoscopic ultrasound combined with an injection of a contrast agent called Sonovue.

Superb Microvascular Imaging (SMI) is a new ultrasound modality that enables the analysis of PIMPTs without the need for a Sonovue injection.

The Mermoz Endoscopy Centre will be equipped with an ultrasound console enabling SMI to be performed during an endoscopic ultrasound examination.

This technology is now available on the new EUS Aplio i800 console (Canon-Olympus), which bears the CE mark.

To date, no data have been published on the potential of SMI for analysing a PIMPT. This is why this clinical investigation is being conducted

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Pancreatic cysts are becoming increasingly common in the general population. They are most often discovered incidentally during an imaging scan.

There are many types of pancreatic cystic lesions, but the most common are papillary intraductal mucinous pancreatic tumours (PIMPTs), serous cystadenomas (SCAs), mucinous cystic tumours (MCTs) (formerly known as mucinous cystadenomas), cystic neuroendocrine tumours, and solid and pseudopapillary tumours.

PIMPTs carry a risk of degeneration, which may arise from an initially benign wall-bound nodule (polyp) that can subsequently progress to a malignant lesion. The average rates of high-grade dysplasia/invasive carcinoma in surgical specimens of PIMPT from the secondary ducts and the main duct are 31% and 62% respectively. The presence of a wall-adherent nodule > 1 cm is a clear indication for pancreatic surgery to prevent neoplastic progression (or to treat it if it is already present within the nodule). However, PIMPTs also secrete mucus, which most often presents as a globule adhering to the wall, thus resembling a wall-adherent nodule.

The key examination for assessing a PIMPT is echoendoscopy, which enables the type of material present within the cyst to be characterised. The most sensitive standard Doppler technique (e-flow) is often unsuccessful (no visible vessels) or yields an inconclusive result, as the vessels present in the tissue nodules are very fine and have a very slow flow.

Currently, to distinguish mucus from a tissue nodule, an ultrasound contrast agent (Sonovue) is routinely used to detect microvascularisation. A tissue nodule takes up the contrast agent, whereas a mucus ball is avascular (no contrast uptake).

Superb Microvascular Imaging (SMI) is a new ultrasound mode that broadens the range of visible blood flow by revealing low-velocity microvascular flow. SMI is capable of visualising microvascular flow without the injection of contrast medium, unlike the current gold standard technique based on the injection of Sonovue.

The Mermoz Endoscopy Centre will be equipped with an ultrasound console enabling SMI to be performed during an echoendoscopy examination. This technology is now available on the new Aplio i800 EUS console (Canon-Olympus).

To date, no data have been published on the potential of SMI to characterise the endocystic material of PIMPTs. This is why this clinical investigation is being conducted.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

60

Fase

  • Ikke anvendelig

Kontakter og lokationer

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Studiekontakt

Studiesteder

      • Lyon, Frankrig, 69008
        • Hôpital privé Jean Mermoz
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Patient referred for an endoscopic ultrasound assessment of a PIMPT
  • Patient with endocystic material of undetermined nature measuring 3 mm or more
  • Patient registered with or covered by the social security scheme
  • Patient who speaks French
  • Patient who has signed an informed consent form

Exclusion Criteria:

  • Patient whose lesion meets the criteria for malignancy (tissue mass, metastases, ascites, vascular infiltration)
  • Patient for whom Sonovue is contraindicated
  • Pregnant woman
  • Vulnerable patient: an adult under guardianship, curatorship or other legal protection, or deprived of their liberty by a judicial or administrative decision
  • Patient admitted to hospital without consent

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: SMI group
Imaging of endocystic material within PIMPT in SMI, using the new Aplio i800 EUS console (Canon-Olympus)
Imaging of endocystic material within PIMPT in SMI, using the new Aplio i800 EUS console (Canon-Olympus)

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
SMI sensitivity
Tidsramme: Day 0
Sensitivity is defined as the number of true positives (positive diagnoses in patients with a tissue nodule) divided by the total number of patients with a tissue nodule
Day 0

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. juli 2026

Primær færdiggørelse (Anslået)

1. januar 2028

Studieafslutning (Anslået)

1. januar 2028

Datoer for studieregistrering

Først indsendt

17. juni 2026

Først indsendt, der opfyldte QC-kriterier

17. juni 2026

Først opslået (Faktiske)

23. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

23. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

17. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 2026-A00625-46

Plan for individuelle deltagerdata (IPD)

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INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

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Ingen

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