A single-center prospective pilot study to estimate the optimal white biopsy specimen length in EUS-FNA with 22-gauge needles

A single-center prospective pilot study to estimate the optimal white biopsy specimen length in EUS-FNA with 22-gauge needles - A single-center prospective pilot study to estimate the optimal white biopsy specimen length in EUS-FNA with 22-gauge needles

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000023013

Enrollment

100

Registered

2016-07-04

Start date

2016-07-04

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

Solid tumor

Interventions

New 22-gauge FNA needle

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Cases need histological or cytological diagnosis for treatment 2) Cases obtained written informed consent

Exclusion criteria

Exclusion criteria: 1) Cases with high risk of puncturing cystic lesion 2) Cases with known bleeding disorders 3) Cases regarded by doctors as inappropriate for the enrollment for some reasons

Design outcomes

Primary

Measure	Time frame
To evaluate the optimal white biopsy specimen length (cut-off value) using a stereoscopic microscope in EUS-FNA	—

Secondary

Measure	Time frame
Accuracy of new FNA needle Yield of core specimen on histological analysis of new FNA needle Complication rate of new FNA needle	—

Countries

Japan

Contacts

Public ContactKosuke Okuwaki

Kitasato University School of Medicine Department of Gastroenterology

kokuwaki@kitasato-u.ac.jp+81-42-778-8111

Outcome results

None listed

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