Byung-Koo Yoon

ObjectiveThe aim of this study was to compare long-term use of combined oral contraceptive (COC) after gonadotropin-releasing hormone (GnRH) agonist plus add-back therapy with dienogest (DNG) treatment as medical treatments after surgery fo…

ObjectiveThis study was conducted to evaluate the effects of long-term postoperative dienogest (DNG) use for the treatment of endometriosis on bone mineral density (BMD).Study designSixty reproductive-aged women who underwent conservative s…

OBJECTIVE: To compare the efficacy of different add-back regimens on hypoestrogenic symptoms during postoperative gonadotropin-releasing hormone (GnRH) agonist treatment in endometriosis patients. METHODS: This prospective cohort study incl…

PurposeThis study was performed to compare the efficacy and tolerability of GnRH agonist with add-back therapy versus dienogest treatment for preventing pelvic pain recurrence after laparoscopic surgery for endometriosis.MethodsSixty-four r…

Post-operative cyclic oral contraceptive use after gonadotrophin-releasing hormone agonist treatment effectively prevents endometrioma recurrence

ObjectiveAs endometrioma frequently recurs after conservative surgery, long-term postoperative medical treatment for the prevention of recurrence is necessary. However, it has not been elucidated whether long-term postoperative medical trea…

Study objectiveYoung age is a possible risk factor of endometriosis recurrence after surgery. However, the efficacy of postoperative medical treatment has not been well addressed in adolescents. The purpose of this study was to evaluate whe…

Concerns for negative effects of oral contraceptives (OCs) on bone mineral density (BMD) in long-term users have been raised, since OCs suppress the hypothalamic-pituitary-ovarian axis. However, there have been still limited data regarding …

Study objectiveTo evaluate the clinical characteristics of endometrioma in adolescent women compared to women of other age groups.DesignCross-sectional study.SettingA university hospital.ParticipantsThree-hundred seventy-six women.Intervent…

We evaluated the laterality of primary endometrioma and characteristics of patients according to the laterality of recurrent endometrioma in 140 women with recurrent endometrioma after conservative surgery. Histologically confirmed recurren…

A few studies have investigated the effects of laparoscopic cystectomy for endometrioma on ovarian reserve using serum anti-Müllerian hormone (AMH) levels and have shown inconsistent results. This prospective study was performed to estimate…

Currently, no standard post-operative medical therapy has been shown to be superior in reducing the recurrence of endometrioma. This retrospective study was performed to evaluate the efficacy of post-operative cyclic oral contraceptive (OC)…

AIMS: To characterize the reproductive health of urban South Korean women of reproductive age. METHODS: A cross-sectional online survey on menstrual patterns, sexual behavior, utilization of contraception, and perception of gynecological d…

ObjectiveTo evaluate the efficacy and tolerability of a low-dose estrogen-only regimen as a short-term add-back therapy during post-operative GnRH agonist (GnRHa) treatment of patients with endometriosis.Study designRetrospective cohort stu…

STUDY OBJECTIVE: The goal of this preliminary study was to assess the effect of cyclic monophasic oral contraceptives (OCs) as a postoperative long-term maintenance therapy (median 33.2 months) to suppress recurrence of endometrioma after c…

ObjectivesThis study was undertaken to evaluate the incidence and the factors associated with uterine bleeding while taking GnRH agonist treatment combined with tibolone add-back therapy in endometriosis patients of reproductive age.Study d…

OBJECTIVE: This study was undertaken to compare the patterns of menstruation-related problems between adolescents and premarital women who visited the Young Lady Clinic (YLC) at Samsung Medical Center. STUDY DESIGN: This study includes 646…