Risk of Umbilical Trocar-site Hernia After SILC Cholecystectomy Versus Conventional Cholecystectomy

Study Overview
=================
Brief Summary
-----------------
Background Laparoscopic cholecystectomy is a very common procedure. Postoperative pain, especially around the umbilical port is dominating the first postoperative week. Single Incision Laparoscopic cholecystectomy (SILC) has been proposed to diminish postoperative incisional pain and improve cosmetic results, but results are not convincing and the risk of formation of an umbilical trocar-site hernia is not properly investigated. This study aimed to investigate the risk of umbilical trocar-site hernia formation after SILC vs. conventional 4-port laparoscopic cholesystectomy. Methods This is a cohort registry study with prospective questionnaire and clinical follow-up on 239 patients having a SILC from 1/1 2009 to 1/6 2011 vs. 478 mathed patients having a conventional laparoscopic cholecystectomy (consecutively from one month before and after SILC. They are matched for age, gender, date of operation, and surgeons skills (database from intraoperatively registered data). Primary endpoint is umbilical trocar-site hernia formation (operation for a umbilical hernia or clinical hernia). The H0 hypothesis is that there is not difference between SILC and conventional. Exclusion criteria are: death, operation for acute cholecystitis. The included patients will be sent a questionnaire asking for operation for a hernia in the area, suspicion of a hernia, and perioperative data that we do not have in the database. Futhermore those patients who suspect a hernia will be invited to aclinical exam by a medic to state the diagnosis. Furthermore we patients are asked to report if they have chronic pain and/or discomfort.

Official Title
-----------------
Risk of Umbilical Trocar-site Hernia After SILC Versus Conventional Laparoscopic Cholecystectomy

Conditions
-----------------
Cholecystolithiasis, Incisional Hernia

Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: SILC 1/1-2009-1/6-2011 and matched controls consecutively from the cholecystectomy-database having a lap. chol. one month before and one month after the SILC group. Exclusion Criteria: death in the follow-up time an abdominal operation before la.chol/SILC with midline incision an abdominal operation after la.chol/SILC with midline incision primary operation for acute cholecystitis

Ages Eligible for Study
-----------------
Minimum Age: 18 Years
Maximum Age: 90 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| SILC cholecystectomy<br>No intervention. 239 SILC having a prospective questionnaire and clinical follow-up, if the patient suspects an umbilical hernia. | |
| and conventional lap. cholecystectomy<br>no intervention.Patients are also mailed a prospective questionnaire and clinical follow-up, if the patient suspects an umbilical hernia. | |

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Umbilical trocar-site hernia formation | Operation for an umbilical trocar-site hernia or clinical trocar-site hernia formation | participants will be followed for expected average of 3 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| chronic pain and discomfort | The degree of long-term chronic pain and discomfort after cholecystectomy | participants will be followed for expected average of 3 years | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
SILC, lap. cholecystectomy, trocar-site hernia