Genetics seem to play an important role in endometriosis. We have recently found that patients with a positive family history for endometriosis had a higher recurrence rate of endometrioma after laparoscopic surgery.

 
Is a Positive Family History of Endometriosis a Risk Factor for Endometrioma Recurrence After Laparoscopic Surgery?
Sebastiano Campo, Vincenzo Campo and Pietro Gambadauro

Reprod Sci. 2014 Apr;21(4):526-31. DOI: 10.1177/1933719113503413

Read more via Is a Positive Family History of Endometriosis a Risk Factor for Endometrioma Recurrence After Laparoscopic Surgery? | Dr. Pietro Gambadauro, MD, PhD.