Liver Diseases
Conditions
Brief summary
To validate the Iwate difficulty scoring system and Institut Mutualiste Montsouris (IMM) scoring system (Appendix 2) in both laparoscopic and robotic liver resections
Detailed description
Minimally-invasive liver resections (MILR) are increasingly conducted world-wide today. Several international consensus meetings were convened to enable the safe dissemination of laparoscopic and robotic liver resections. The Iwate difficulty scoring system (Appendix 1) was formulated in Japan to grade the difficulty of liver resections. This was to allow beginners to adopt a stepwise approach to safely perform MILR according to their experience and competency level. Although this system has been recently validated in a recent Japanese multicenter study, it has not been externally validated in a large cohort of patients. Thus far, it has only been validated in several small single center studies. Furthermore, its utility for robotic liver resections has not been well-studied.
Interventions
PROCEDUREMinimally Invasive Liver Resection
laparoscopic and robotic liver resections
Sponsors
Methodist Health System
Study design
Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 79 Years
Inclusion criteria
* All consecutive patients operated at a single institution during a fixed period * Most recent operation date allowed (up till December 31, 2020, to allow three months follow-up). * All minimally invasive hepatectomy approaches can be included, including lap- assisted (hybrid), hand-assisted, robotic-assisted and pure laparoscopy. * The data of all patients including those that had repeat liver resections, concomitant surgeries (e.g. colectomies, hilar lymph node dissection, enbloc resections) may be included * Patients with no liver tumors such as recurrent pyogenic cholangitis/ gallbladder may be included * The site of the lesion/ pathology will be considered as the tumor site, size will be considered less than 3 cm unless tumor invades the liver.
Exclusion criteria
* • Patients \< 18 years of age * Patients with liver transplant living donor hepatectomies
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Iwate scores for laparoscopic and robotic liver resections | January 1, 2000 to December 31, 2020 | To validate the Iwate difficulty scoring system IMM scoring system in both laparoscopic .and robotic liver resections. The IWATA measures the difficulty index from 0 to 12. The IMM scoring is from code 1 to 11. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Propensity scores for robotic and laparoscopic liver resections | January 1, 2000 to December 31, 2020 | To perform a propensity score matching (including adjustment for difficulty) comparing robotic and laparoscopic liver resections. |
Countries
United States
Outcome results
None listed