Study: excision of endo only has 36% chance reop rate, not always associated with recurrence

"CONCLUSIONS: Laparoscopic excision of endometriosis significantly reduces pain and improves quality of life for up to 5 years. The probability of requiring further surgery is 36%. Return of pain following laparoscopic excision is not always associated with clinical evidence of recurrence." http://humrep.oxfordjournals.org/content/18/9/1922.long