AAGL 2021 Endometriosis Classification: An Anatomy-based Surgical Complexity Score

Area of Science:

• Gynecology
• Surgical Classification Systems
• Endometriosis Research

Background:

• Endometriosis classification systems are crucial for standardizing surgical complexity assessment.
• Existing systems like the revised American Society of Reproductive Medicine (ASRM) may have limitations in reproducibility.
• A need exists for a more objective and reliable method to score intraoperative surgical difficulty.

Purpose of the Study:

• To develop and validate a new endometriosis classification system for scoring intraoperative surgical complexity.
• To assess the correlation between the new classification system and patient-reported pain and infertility.
• To compare the performance of the new system against existing staging methods.

Main Methods:

• A multicenter study involving 1224 patients with histologically proven endometriosis undergoing laparoscopic treatment.
• Surgical staging using the 2021 American Association of Gynecologic Laparoscopists (AAGL) and revised American Society of Reproductive Medicine (ASRM) systems.
• Comparison of staging reproducibility and correlation with patient-reported outcomes (pain, infertility).

Main Results:

• The AAGL 2021 classification demonstrated high reproducibility (κ=0.621) in discriminating surgical complexity.
• The ASRM classification showed poor reproducibility (κ=0.317) for complexity stages.
• Both systems correlated comparably with patient-reported dysmenorrhea, dyspareunia, dyschezia, total pain, and infertility.

Conclusions:

• The AAGL 2021 Endometriosis Classification reliably identifies objective intraoperative findings and surgical complexity levels.
• This new system offers improved discrimination of surgical difficulty compared to the ASRM staging system.
• The AAGL system's correlation with pain and infertility supports its clinical utility in managing endometriosis patients.