preoperative tattooing and improved lymph nodes retrieval in patients with rectal cancer who received preoperative chemoradiotherapy -- randomized controlled study

preoperative tattooing and improved lymph nodes retrieval in patients with rectal cancer who received preoperative chemoradiotherapy -- randomized controlled study - improved lymph nodes retrieval by tattooing in rectal cancer patients who received preoperative chemoradiotherapy -- randomized controlled study

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000016268

Enrollment

Registered

2015-01-20

Start date

2011-05-01

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

clinical Stage II or Stage III rectal cancer

Interventions

Standard group(traditional method) Trial group (tattooing group)

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: patients with clinical Stage II or Stage III rectal cancer

Exclusion criteria

Exclusion criteria: emergency surgery

Design outcomes

Primary

Measure	Time frame
the nunber of retrieved lymph nodes	—

Secondary

Measure	Time frame
the number of metastatic lymph nodes	—

Countries

Japan

Contacts

Public ContactSotaro Sadahiro

Tokai University Department of Gastrointestinal Surgery

sadahiro@is.icc.u-tokai.ac.jp0463-93-1121

Outcome results

None listed

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