Covered Metallic Stent and Benign Colonic Strictures

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: NCT01570114
Recruitment Status : Completed
First Posted : April 4, 2012
Last Update Posted : April 4, 2012
Information provided by (Responsible Party):
VANBIERVLIET, Société Française d'Endoscopie Digestive

Brief Summary:
Self-expanding metallic stent placement is a safe and effective endoscopic procedure increasingly used to relieve colonic obstruction. Fully covered metal stents (FCSEMS) and plastic stents have been recently developed to reduce both hyperplastic (non tumoral) and tumoral tissue ingrowth. These fully covered metal or plastic stents have several advantages over non-covered stents, including the possibility of retrieval and limited local tissue reaction, while providing alleviation of obstruction at possibly lower costs. Only few reports of fully covered metal stent placement in patients with benign colorectal strictures are available in the literature. The aim of this study was to assess the effectiveness of FCSEMS in the management of the colonic benign strictures.

Condition or disease Intervention/treatment
Colonic Diseases Stricture Occlusion Device: Fully covered metallic colonic stent

Detailed Description:

It is a national multicentric retrospective study on the use of fully covered metal stent placement in patients with benign colorectal strictures.

Consecutive patients above 18 years of age with a symptomatic benign colonic stricture despite optimal medical and/or endoscopic dilation therapy and which required the use of a FCSEMS were included. All strictures were confirmed to be benign by histology. All details concerning previous history, origins and treatment (medical or endoscopic) of the colonic stenosis were collected from the medical file.

Senior endoscopists with an experience of more than 50 colonic stent placements performed the procedure under general propofol-induced anesthesia with the same technic (The stent was placed under fluoroscopic and videoendoscopic controls).

Patients were required after the procedure to take oral osmotic laxatives regularly. Post-stenting complications were defined as immediate (during the procedure), early (occurring ≤ 30 days) and late (> 30 days) after the procedure. Stent removal and routine follow up endoscopy were scheduled 4 to 6 weeks after placement in most patients or earlier if complications occurred.

All patients were followed up at regular intervals based on their clinical situation. A retrospective chart review was performed to analyze the long-term outcome of the patients.

Study Type : Observational
Actual Enrollment : 43 participants
Observational Model: Cohort
Time Perspective: Retrospective
Study Start Date : January 2011
Actual Primary Completion Date : September 2011
Actual Study Completion Date : October 2011

Group/Cohort Intervention/treatment
covered metallic stent
Endoscopically insertion of fully covered metallic stent on benign colonic strictures
Device: Fully covered metallic colonic stent
Endoscopically insertion of fully covered metallic colonic stent

Primary Outcome Measures :
  1. Symptom resolution of colonic occlusion [ Time Frame: 48 hours ]
    Defined as the clinical (stools, stop pain) and radiological evidence of colonic decompression within 48 hours of stent insertion and without the need for reintervention

Secondary Outcome Measures :
  1. Successful stent placement [ Time Frame: Immediatly after stent insertion (one minute) ]
    On the first attempt with complete deployment and precise positioning of the stent at the location of the stenosis, which was confirmed by fluoroscopy

  2. Successful stent retrieval [ Time Frame: One minute (during colonoscopy for stent retrieval) ]
    Possibility of retrieval the stent with a snare or a forceps

  3. Occurrence of any complication during interventional endoscopy, stent retrieval and the follow-up [ Time Frame: 60 days ]
    Perforation, bleeding, migration, pain, fecal incontinence and foreign body sensation, stent impaction and hyperplastic tissue overgrowth

  4. Recurrence of colonic occlusion [ Time Frame: 60 days, 6 months and one year ]
    New episode of occlusion or subocclusion (pain with stool and gas discontinuation and imaging with cecum dilation) after stent retrieval or migration

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients in universitary tertiary care center benefited from a fully covered metallic colonic stent for treatment of benign stricture

Inclusion Criteria:

  • patients above 18 years of age
  • symptomatic benign colonic stricture despite optimal medical and/or endoscopic dilation therapy

Exclusion Criteria:

  • Previous insertion or treatment of the stricture with metallic (covered or uncovered) stent

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01570114

Sponsors and Collaborators
Société Française d'Endoscopie Digestive
Principal Investigator: Geoffroy Vanbiervliet, MD Société Française d'Endoscopie Digestive

Responsible Party: VANBIERVLIET, Medical doctor - study coordinator and director of the endoscopy unit in universitary hospital of Nice (France), Société Française d'Endoscopie Digestive Identifier: NCT01570114     History of Changes
Other Study ID Numbers: FCSEMS
First Posted: April 4, 2012    Key Record Dates
Last Update Posted: April 4, 2012
Last Verified: March 2012

Keywords provided by VANBIERVLIET, Société Française d'Endoscopie Digestive:
Covered metallic stent
benign stricture

Additional relevant MeSH terms:
Constriction, Pathologic
Colonic Diseases
Pathological Conditions, Anatomical
Intestinal Diseases
Gastrointestinal Diseases
Digestive System Diseases