The purpose of this study is to collect and analyze data on the characteristics of women who are seeking treatment for endometriosis, suspected endometriosis, pain and/or infertility as part of their standard medical care. Data collected will contribute to the development of guidelines for the surgical management of endometriosis. In addition, specimens will be collected for future testing regarding diagnosing, and/or staging of endometriosis, or suspected endometriosis, pain and infertility.

Patients seen at Saint Louis University Center for Endometriosis (which has offices locations at St. Mary's, St. Luke's and the SLU-UMG clinic - all of which are in the SLU Epic system), and operated on for endometriosis, suspected endometriosis, pain and/or infertility at St. Mary's hospital (only).

A preoperative questionnaire will be provided to the subject. Questions from the survey include information on baseline demographics, severity and type of pain, and previous medical and surgical history. Operative data will also be collected and analyzed.

A post-operative questionnaire will be administered to the participants at 6 months, and then at regular yearly intervals after the surgery by a secure on-line process using the RedCap software. Improvement in quality of life and pain scores will be analyzed.

Specimens will also be collected and stored for future testing regarding diagnosing, and/or staging of endometriosis, suspected endometriosis, pain and infertility.

Inclusion Criteria:

• Female patients
• 13-55 years of age
• Anyone seen at the Center for Endometriosis

Exclusion Criteria:

• Prior bilateral salpingo-oophorectomy
• post natural menopause
• Significant mental or chronic systemic illness that might confound pain assessment or the inability to complete the study.