Endo-Laparoscopic Approach Versus Conventional Open Surgery in Obstructing Left-sided Colon Cancer: RCT

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00654212
Recruitment Status : Completed
First Posted : April 7, 2008
Last Update Posted : May 5, 2015
Information provided by (Responsible Party):
Cheung Yui Shan, Pamela Youde Nethersole Eastern Hospital

April 2, 2008
April 7, 2008
May 5, 2015
January 2002
May 2005   (Final data collection date for primary outcome measure)
successful one-stage operation [ Time Frame: till end of the study ]
Same as current
Complete list of historical versions of study NCT00654212 on Archive Site
cumulative operative time, cumulative blood loss, conversion rate, post-operative pain, cumulative length of hospital stay, operative mortality, post-operative complications, ates of permanent stoma creation,disease recurrence, survival [ Time Frame: end of study ]
Same as current
Not Provided
Not Provided
Endo-Laparoscopic Approach Versus Conventional Open Surgery in Obstructing Left-sided Colon Cancer: RCT
Endo-Laparoscopic Approach Versus Conventional Open Surgery in the Management of Obstructing Left-sided Colon Cancer: A Randomized Trial
Objective: Whether temporary endoscopic decompression by Self-expanding metal stents (SEMS) could allow these patients to undergo successful laparoscopic resection (endo-laparoscopic approach) has never been previously studied. This randomized trial aims to compare this approach with emergency open surgery in the management of obstructing left-sided colon cancer.


First reported in 1991, laparoscopic assisted colectomy is increasingly practised world-wide. Abundant evidence exists in the literature suggesting laparoscopic assisted colectomy, when compared with its open counterpart, is associated with more favourable short-term outcomes, better cosmesis, and better patient's satisfaction. Moreover, recent reports from large-scale randomized trials support the use of this minimally invasive technique in the treatment of colorectal cancer, a malignant condition common in many parts of the world. However, around 8-29% of patients with colorectal cancer present as acute large bowel obstruction, a condition used to be considered as a contraindication to laparoscopic surgery due to poor exposure and potential hazard of injury to the distended bowel. Thus, most cases of malignant large bowel obstruction mandate an emergency open surgery to relieve the obstruction and resect the tumour, with many patients, especially those with obstructing left-sided colon cancer, ending up with temporary or permanent stoma which can adversely affect their health-related quality of life.

Self-expanding metal stents (SEMS) was first described by Dohmoto in 1991 as an endoscopic palliative alternative for treating inoperable colon cancer. Three years later, Tejero et al. published a preliminary report of using SEMS as a 'bridge' to surgery in two patients with colonic obstruction 13. Since then, a number of publications as well as systemic review have shown that endoluminal stenting is a relatively simple and safe alternative to standard surgical management of acute malignant obstruction of the left colon, thereby obviating the need of emergency surgery or colostomy. However, whether temporary endoscopic bowel decompression by SEMS could allow patients with malignant left colonic obstruction to undergo successful laparoscopic resection (endo-laparoscopic approach) has never been studied in detail before. We therefore conducted the current trial to study the outcomes of this endo-laparoscopic approach in patients with obstructing left-sided colon cancer.

Patients and Methods:

This study is a randomized controlled trial designed to evaluate the outcomes of the endo-laparoscopic approach for patients with obstructing left-sided colon cancer, using patients undergoing emergency open surgery as controls. Only patients with obstructing left-sided colon cancer were studied because of the reported high incidence of stoma creation in this condition10,11, and because a homogeneous group of patients could be ensured to facilitate comparison of the two different approaches. A single surgical team consisting of two surgeons (C.C.C. and M.K.W.L.) and one camera assistant in the case of laparoscopic resection performed all operations with the patient under general anesthesia. The study was approved by the hospital ethical committee and was not supported by any commercial funds or sponsorship.

Phase 4
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Care Provider, Outcomes Assessor)
Primary Purpose: Treatment
Colonic Neoplasms
  • Procedure: endo-laparoscopic approach
    endoluminal stenting followed by laparoscopic resection
    Other Name: Wallstent Enteral Endoprosthesis
  • Procedure: open approach
    emergency open surgery
    Other Name: laparotomy
  • Active Comparator: 1
    endoluminal stenting followed by laparoscopic resection (endo-laparoscopic limb, the study group)
    Intervention: Procedure: endo-laparoscopic approach
  • 2
    emergency open surgery (open limb, the control group)
    Intervention: Procedure: open approach
Cheung HY, Chung CC, Tsang WW, Wong JC, Yau KK, Li MK. Endolaparoscopic approach vs conventional open surgery in the treatment of obstructing left-sided colon cancer: a randomized controlled trial. Arch Surg. 2009 Dec;144(12):1127-32. doi: 10.1001/archsurg.2009.216.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Same as current
December 2007
May 2005   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Consecutive adult patients (aged 18 or above) presenting with clinical features of left colonic obstruction were potential candidates.
  • In the absence of peritonitis, right lower quadrant tenderness or grossly distended caecum (10cm or above in maximal dimension) on plain abdominal radiograph, an urgent water-soluble single contrast enema was performed to determine the level of obstruction within 24 hours of admission.
  • Patients were recruited if the lower border of an obstructing tumour was found between the splenic flexure and rectosigmoid junction.
  • Informed consent was obtained from every patient recruited in the trial.

Exclusion Criteria:

  • Patients who did not give informed consent
  • Patients who were considered unfit for operative treatment
  • Patients with previous laparotomy
  • Patients with clinically palpable tumor on abdominal examination.
Sexes Eligible for Study: All
18 Years and older   (Adult, Older Adult)
Contact information is only displayed when the study is recruiting subjects
Hong Kong
Not Provided
Not Provided
Cheung Yui Shan, Pamela Youde Nethersole Eastern Hospital
Pamela Youde Nethersole Eastern Hospital
Not Provided
Study Director: Li Ka Wah, FRCSEd PamelaNEH
Pamela Youde Nethersole Eastern Hospital
May 2015

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP