This is a randomised study comparing the effect of two laparoscopic techniques for treatment of ovarian endometriomas on recurrence rate and ovarian reserve.

Inclusion Criteria:

• age between 18 and 40 years
• uni or bilateral symptomatic endometriotic cysts with a minimum diameter of 30 millimetres
• no counter-indication for the use of GnRH analogues

Exclusion Criteria:

• previous pelvic surgeries
• history of cancer
• suspected malignancy
• presurgical suspicion or evidence of deep endometriosis
• presurgical suspicion or evidence of premature ovarian failure
• use of oestrogen suppressive drugs in the preceding 6 months