A retrospective study of novel tapered-and-flared fully covered self-expandable metal stent placement for unresectable malignant distal biliary obstruction

A retrospective study of novel tapered-and-flared fully covered self-expandable metal stent placement for unresectable malignant distal biliary obstruction - A retrospective study of novel tapered-and-flared fully covered self-expandable metal stent placement for unresectable malignant distal biliary obstruction

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000057746

Enrollment

Registered

2025-04-30

Start date

2025-04-30

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

unresectable malignant distal biliary obstruction

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who underwent transpapillary placement of a 10 mm tapered-and-flared fully covered self-expandable metal stent for unresectable malignant distal biliary obstruction

Exclusion criteria

Exclusion criteria: Patients after bilioenteric anastomosis Patients in whom clinical success is not expected by stent placement Patients with biliary drainage using multiple stents Patients with a history of biliary drainage using tapered-and-flared fully covered self-expandable metal stent

Design outcomes

Primary

Measure	Time frame
time to recurrent biliary obstruction	—

Secondary

Measure	Time frame
Causes of recurrence of biliary obstruction (RBO) Technical success rate Clinical success rate Rate of early adverse events Rate of late adverse events other than RBO Survival period Technical success rate of reintervention in cases of RBO	—

Countries

Japan

Contacts

Public ContactToji Murabayashi

Ise Red Cross Hospital Department of Gastroenterology

murabayashitoji@m2.gmobb.jp0596-28-2171

Outcome results