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Relook Laparoscopy for Peritoneal Surface Disease (ReLaPSeD) Trial A prospective randomised controlled trial comparing relook laparoscopy vs. standard follow-up for early detection and treatment of patients at high risk for peritoneal metastases after resection of colorectal cancer

Relook Laparoscopy for Peritoneal Surface Disease (ReLaPSeD) Trial A prospective randomised controlled trial comparing relook laparoscopy vs. standard follow-up for early detection and treatment of patients at high risk for peritoneal metastases after resection of colorectal cancer

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12618000372280
Acronym
ReLaPSeD
Enrollment
21
Registered
2018-03-12
Start date
2019-04-17
Completion date
2022-05-23
Last updated
2025-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This study has been designed to compare relook laparoscopy versus standard follow up for early detection and treatment of patients at high risk for metastases after resection of colorectal cancer. Who is it for? You may be eligible for this study if you are aged between 18 and 80 years, have been diagnosed with primary colorectal cancer for which you have undergone colorectal resection, and are at high risk of the cancer spreading within the abdomen (peritoneal metastases). Study details Participants will be randomly allocated (by chance) to undergo either a relook laparoscopy 9-12 months after initial colorectal cancer surgery in addition to standard follow-up or continue with standard follow-up only. Diagnostic laparoscopy refers to examination of the abdominal cavity through minimally-invasive ("key-hole") surgery. Standard follow up tests include regular blood tests for levels of tumour markers (every three months) and regular CT scans (yearly). Participants will then be followed up over three years to assess disease status (i.e. remission or relapse) and to complete a series of questionnaires to determine quality of life. It is hoped that this research will help determine whether a relook laparoscopy is a valid and effective way of increasing survival rates in patients with high risk colorectal cancer.

Interventions

Diagnostic laparoscopy refers to examination of the abdominal cavity through minimally-invasive ("key-hole") surgery. It takes approximately 45 - 60 minutes and will be performed by a specialist colorectal surgeon. Patients randomised to the intervention group will undergo relook diagnostic laparoscopy at 9- 12 months post surgery (in addition to standard follow up tests, including clinical review, tumour markers and regular CT scans).

Sponsors

Surgical Outcome Research Centre
Lead SponsorOther

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

Resected colorectal adenocarcinoma (confirmed on histopathology) with complete oncological excision (i.e. clear resection margins), AND, one or more of the following high-risk features: i. Synchronous peritoneal or ovarian metastases that were resected completely at time of surgery ii. Perforated tumour (including iatrogenic perforation) iii. T4 tumour iv. Mucinous T3 tumour

Exclusion criteria

i. Metastatic disease on preoperative staging ii. Recurrent disease on staging after adjuvant chemotherapy iii. Age < 18 or > 80 iv. ASA >3, ECOG >2 v. Tumour histology not colorectal adenocarcinoma vi. Major uncontrolled medical comorbidity vii. Medical conditions causing inability to give informed consent or comply with the study protocol

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026