In women undergoing laparoscopic ovarian cystectomy which is less harmfull on the ovarian reserve (electrocoagulation or suturing).

The aim of the present study was to determine which hemostatic procedure (hemostatic suture or electrocautery) may be less harmful after laparoscopic cystectomy, based on the longterm status of the ovarian reserve.

Inclusion Criteria:

1. Age 18- 45.
2. Regular menstrual cycle.
3. Unilateral ovarian cyst clinical & us finding as endometriotic cyst.
4. C/O of pelvic pain.
5. No medications (oral pills & hormonal drugs) in the past 3 monthes before enrollement.
6. No evidence of endocrine disorders (DM, Thyroid dysfunction,hyper prolactenemia, congenital adrenal hyperplesia, cushing's syndrome or adrenal insufficiency)
7. No previous adnexial surgery.
8. Pathology diagnosis of excised ovarian tissue (endometriotic cyst)
9. Appropriate medical condition for laparoscopic surgery.
10. Completely understand the process of the study with written consent.

Exclusion Criteria:

1. PCO according to Rotterdam criteria.
2. Pathological diagnosis of excised ovarian tissue as non endometriotic cyst.
3. Previous ovarian surgery.
4. Suspected ovarian malignancy.
5. Patient whose histopathology showed benign cyst apart from endometrioma.
6. Irregular menstrual cycles.
7. Post menopausal status.
8. Bilateral ovarian cyst.
9. AMH < 0.5 ng/ml.
10. Premature ovarian failure in family.

Allocation and concealment will be done by sequentially sealed opaque envelopes. 60 envelopes will be numbered serially from 1 to 60, 30 envelopes will contain the letter c and the other 30 will contain the letter S.

In each envelope, the corresponding letter which donates the allocated group will be put according to the randomization table and them all envelopes will be closed and put in one box. When the first patient arrives, the first envelope will be opened and the patient will be allocated according to the letter inside.