Is robotic surgery safe and effective for advanced (T4) colorectal cancer? A multicenter retrospective study

Short- and long-term outcomes of robotic assisted surgery for T4 colorectal cancer: A multicenter retrospective study - pT4-ROBOT study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000059581

Enrollment

427

Registered

2025-10-29

Start date

2025-04-01

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

Pathologically confirmed T4 colorectal cancer

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who underwent curative-intent resection between 2016-01-01 and 2024-12-31 at the 7 participating institutions. Pathologically confirmed pT4 colorectal cancer (colon or rectum). Surgical approach: robotic-assisted, laparoscopic, or open. Essential perioperative and follow-up data available for analysis.

Exclusion criteria

Exclusion criteria: Stage IV disease (distant metastasis), R2 resection, Synchronous or metachronous multiple colorectal cancers, Stoma creation only without resection of the primary tumor Recurrent tumors, Incomplete clinical data for key variables

Design outcomes

Primary

Measure	Time frame
Postoperative complications(Clavien-Dindo grade>=2)	—

Secondary

Measure	Time frame
conversion to open surgery; Operative time; estimated blood loss; postoperative length of stay; overall survival (OS); disease-free survival (DFS).	—

Countries

Japan

Contacts

Public ContactKaido Oishi

National Hospital Organization Nagasaki Medical Center Department of Surgery

kaido.ars@gmail.com+81-957-52-3121

Outcome results