Prospective observational study evaluating the usefulness of gel immersion endoscopy for difficult colorectal stent placement in patients with obstructive colorectal cancer

A single-center prospective observational study evaluating the usefulness of gel immersion endoscopy in difficult colorectal stent placement for obstructive colorectal cancer - GISCO Study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000061800

Enrollment

Registered

2026-06-08

Start date

2026-06-08

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

Obstructive colorectal cancer

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1.Patients scheduled for colorectal stent placement for malignant colorectal obstruction. 2.Patients who provide written informed consent, or whose legal representative provides consent.

Exclusion criteria

Exclusion criteria: 1.Patients with suspected benign colorectal stenosis. 2.Patients with suspected gastrointestinal perforation. 3.Patients with multiple colorectal stenotic lesions. 4.Patients whose general condition precludes endoscopic intervention. 5.Patients considered unsuitable by the investigators.

Design outcomes

Primary

Measure	Time frame
Time from initiation of guidewire insertion to successful guidewire and catheter passage through the stenotic lesion (seconds), assessed during colorectal stent placement.	—

Secondary

Measure	Time frame
1.Success rate of guidewire and catheter passage through the stenotic lesion, assessed during the procedure 2.Technical success rate, assessed at completion of stent placement 3.Clinical success rate, assessed within 1 week after stent placement 4.Total procedure time, assessed at completion of the procedure 5.Volume of Viscoclear used during gel immersion endoscopy, assessed at completion of the procedure 6.Adverse event rate including perforation, bleeding, stent migration, and stent occlusion, assessed within 1 week after stent placement	—

Measure

Time frame

1.Success rate of guidewire and catheter passage through the stenotic lesion, assessed during the procedure 2.Technical success rate, assessed at completion of stent placement 3.Clinical success rate, assessed within 1 week after stent placement 4.Total procedure time, assessed at completion of the procedure 5.Volume of Viscoclear used during gel immersion endoscopy, assessed at completion of the procedure 6.Adverse event rate including perforation, bleeding, stent migration, and stent occlusion, assessed within 1 week after stent placement

—

Countries

Japan

Contacts

Public ContactShinya Ikeda

Iwata City Hospital Department of Gastroenterology

hp_nsxx0303@yahoo.co.jp0538-38-5000

Outcome results