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  • Title: The influence of oral contraceptives on the postmolar human chorionic gonadotropin regression curve.
    Author: Morrow P, Nakamura R, Schlaerth J, Gaddis O, Eddy G.
    Journal: Am J Obstet Gynecol; 1985 Apr 01; 151(7):906-14. PubMed ID: 2580438.
    Abstract:
    This article reports a retrospective analysis of 149 evaluable cases of molar pregnancy managed at Women's Hospital, Los Angeles County/University of Southern California Medical Center, from January 1977, through June, 1983. In the 84 cases prior to 1981, the patients received estrogen-progestogen oral contraceptives after evacuation while the 55 patients seen after that used nonhormonal contraceptives. The frequency of abnormal regression of the serum beta-subunit of human chorionic gonadotropin in the two groups was not significantly different (22.6% in the hormonal contraception group versus 34.5% in the nonhormonal contraception group). The groups were compared for known and potential risk factors and were nearly identical with respect to patient age, parity, maternal blood type, and race. There were also no significant differences with respect to uterine size, preevacuation beta-subunit of human chorionic gonadotropin serum titer greater than 100,000 mIU/ml, and frequency of theca-lutein cysts. Gestational age was significantly shorter and the frequency of cases with a preevacuation beta-subunit of human chorionic gonadotropin serum titer greater than 250,000 mIU/ml significantly higher in the nonhormonal contraception group, indicating that the nonhormonal contraception group had a higher risk for abnormal human chorionic gonadotropin regression than the hormonal contraception group. We conclude that this study provides no evidence that the use of estrogen-progestogen oral contraceptives prior to human chorionic gonadotropin remission increases the risk for invasive mole or choriocarcinoma following molar pregnancy. This article reports a retrospective analysis of 149 evaluable cases of molar pregnancy managed at Women's Hospital, Los Angeles County/University of Southern California Medical Center, from January 1977-June 1983. In the 84 cases prior to 1981, the patients received estrogen-progestogen oral contraceptives (OCs) after evacuation while the 55 patients seen after that used nonhormonal contraceptives. The frequency of abnormal regression of the serum beta-subunit of human chorionic gonadotropin (hCG) in the 2 groups was not significantly different (22.6% in the hormonal contraception group vs, 34.5% in the nonhormonal contraception group). The groups were compared for known and potential risk factors and were nearly identical with respect to patient age, parity, maternal blood type, and type, and race. There were also no significant differences with respect to uterine size, preevacuation beta-subunit of hCG serum titer 100,000 mIU/ml, and frequency of theca-lutein cysts. Gestational age was significantly shorter and the frequency of cases with a preevacuation beta-subunit of hCGserum 250,000 mIU/ml significantly higher in the nonhormonal contraception group, indicating that the nonhormonal contraception group had a higher risk for abnormal hCG regression than the hormonal contraception group. The authors conclude that this study provides no evidence that the use of estrogen-progestogen OCs prior to hCG remission increases the risk for invasive mole or choriocarcinoma following molar pregnancy.
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