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J Minim Invasive Gynecol. 2009 Mar-Apr;16(2):142-8. doi: 10.1016/j.jmig.2008.12.013.

Endometrioma excision and ovarian reserve: a dangerous relation.

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Department of Obstetrics and Gynecology, University of Milano, Macedonio Melloni Hospital, Italy.


Endometrioma is one of the most frequent pathologies in gynecologic surgery. Laparoscopic cyst excision is considered the best treatment in terms of lower recurrence and improved fertility. However, it was recently questioned whether the excision of the endometrioma could decrease the function of the operated ovary and if it could affect the subsequent fertility. Even if a consistent amount of ovarian tissue is unintentionally removed together with the capsule of the cyst, resulting in does not show the follicular pattern observed in working ovaries. Currently, no definitive data clarify whether the damage to the ovarian reserve, observed in patient with endometrioma, is related to the surgical procedure, to the previous presence of the cyst, or both. Electrosurgial coagulation during hemostasis could play an important role in terms of damage to ovarian stroma and vascularization. Particular attention must be paid in presence of bilateral endometriotic cysts. In fact, an increase in premature ovarian failure rate was reported when both the ovaries are involved in surgery. Incase of assisted reproductive techniques, no clear evidence indicates which is the best approach for concomitant endometriotic cyst. On the base of these considerations endometriomas Should be treated only in case of pain, infertility, and in asymptomatic patients if the cyst diameter is greater than 4 cm.

[Indexed for MEDLINE]

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