Poor response of ovaries with endometrioma previously treated with cystectomy to controlled ovarian hyperstimulation.
OBJECTIVE
To compare ovarian response to controlled ovarian hyperstimulation (COH) between normal ovaries and ovaries previously treated surgically for unilateral ovarian endometrioma.


METHODS
From January 1996 to December 2001, 32 patients with unilateral ovarian endometrioma previously treated surgically underwent 38 cycles of COH. Their records were reviewed retrospectively. The number of dominant follicles observed on the day of hCG injection and the number of eggs retrieved from the diseased and the normal ovaries in each patient were compared.


RESULTS
The numbers of dominant follicles from diseased and normal ovaries were 1.9 +/- 1.5 and 3.3 +/- 2.1, respectively (P < 0.001). During ovum pick up, the numbers of eggs retrieved from diseased and normal ovaries were 2.9 +/- 2.6 and 6.1 +/- 4.1, respectively (P < 0.0001). For diseased ovaries, 21.1% (8/38) had no dominant follicles, while only 7.9% (3/38) of normal ovaries lacked dominant follicles. The clinical pregnancy rate and the implantation rate per embryo transfer were 33.3 and 17.6%.


CONCLUSIONS
Surgery for ovarian endometrioma may damage ovarian reserve. It potentially results in poor ovarian response to COH, compared to the response of the contralateral normal ovary in the same individual.
Ho
Hsin-Yi
HY
Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Mackay Memorial Hospital, 92, Sec. 2, Chung Shan North Road, Taipei 10449, Taiwan.
Lee
Robert Kuo-Kuang
RK
Hwu
Yuh-Ming
YM
Lin
Ming-Huei
MH
Su
Jin-Tsung
JT
Tsai
Yi-Chun
YC
D000328:Adult; D004624:Embryo Transfer; D004715:Endometriosis / Q000503:physiopathology* / Q000601:surgery; D005260:Female; D005307:Fertilization in Vitro; D006062:Gonadotropins / Q000494:pharmacology*; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects; D010049:Ovarian Diseases / Q000503:physiopathology* / Q000601:surgery; D006080:Ovarian Follicle / Q000187:drug effects* / Q000502:physiology; D016471:Ovarian Hyperstimulation Syndrome / Q000209:etiology; D010062:Ovulation Induction; D012189:Retrospective Studies
D006062:Gonadotropins