Long-term oncological feasibility of laparoscopic D1 plus lymphadenectomy for rectal cancer with clinically negative lymph nodes and its preoperative CT evaluation

Long-term oncological feasibility of laparoscopic D1 plus lymphadenectomy for rectal cancer with clinically negative lymph nodes and its preoperative CT evaluation - laparoscopic D1 plus lymphadenectomy for rectal cancer

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000021117

Enrollment

100

Registered

2016-02-20

Start date

2005-09-13

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

Rectal cancer without lymph node metastasis on preoperative computed tomography scans

Interventions

A laparoscopic low or high anterior resection with a D2 lymphadenectomy was performed. The inferior mesenteric artery was exposed at the root of the left colic artery branching and clipped and dissect

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who were diagnosed with rectal cancer without lymph node metastasis by colonoscopies and CT scans

Exclusion criteria

Exclusion criteria: Patients diagnosed with lymph node metastasis, who were treated by chemotherapy and/or radiation therapy preoperatively were excluded. One patient who died of pneumonia within 30 days after surgery was also excluded.

Design outcomes

Primary

Measure	Time frame
Disease specific survival rate and recurrence free survival rate were compared for at least three-year follow-up.	—

Secondary

Measure	Time frame
Feasibility of defining more than 10 mm of the minor axis of the lymph nodes as positive	—

Countries

Japan

Contacts

Public ContactTakeshi Yanagita

Kameda medical center Department of gastroenterological surgery

tkshyngtx@gmail.com81-4-7099-1111

Outcome results

None listed

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