Infertility Issues: What is Endometriosis? Endometriosis, a common gynecological disorder, affects an estimated 5.5 million women in North America, making it one of the leading causes of infertility. “When starting a second family, the obstacle of a previous tubal ligation did not inhibit our dream of having a child." Site Administrator Copyright 2008 Privacy Policy Home | Overview | About Infertility | Treatment Options | What to Expect | About the Center | Contact Us