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Ishikawa H, Goto Y, Hirooka C, Katayama E, Baba N, Kaneko M, Saito Y, Kobayashi T, Koga K. Role of inflammation and immune response in the pathogenesis of uterine fibroids: Including their negative impact on reproductive outcomes. J Reprod Immunol 2024; 165:104317. [PMID: 39154624 DOI: 10.1016/j.jri.2024.104317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 07/31/2024] [Accepted: 08/11/2024] [Indexed: 08/20/2024]
Abstract
Uterine fibroids (UFs), the most common tumors in women of reproductive age, are characterized by sex steroid-dependent growth and excessive deposition of extracellular matrix (ECM) surrounding UF smooth muscle cells. Women with symptomatic UFs experience heavy menstrual bleeding and consequent iron-deficiency anemia. They also have a risk of recurrent pregnancy loss, preterm birth, and cesarean delivery, indicating that UFs can negatively affect reproductive outcomes. Various types of immune cells, including innate and adaptive cells, are observed in UFs; however, the impact of these cells on the pathophysiology of UFs remains unclear. Inflammation may play important roles in the growth of UFs, and expression levels of proinflammatory and inflammatory cytokines, such as interleukin (IL)-1, IL-6, IL-10, TNF-α, and TGF-β, are upregulated in UFs. These cytokines play important roles in the interaction between growth factors and ECM that is regulated by the sex steroids estrogen and progesterone. Furthermore, proinflammatory mediators are upregulated in females with UFs, with higher expression levels in the endometrium with submucosal and intramural UFs than in the endometrium without UFs, indicating that these proinflammatory cytokines may impair endometrial receptivity, leading to implantation failure in in vitro fertilization programs. Hormonal treatments using gonadotropin releasing hormone analogs and the selective progesterone receptor modulator ulipristal acetate significantly shrink UFs and improve UF-related symptoms. These compounds can regulate local inflammation in UFs and adjacent myometrium. Controlling and improving local inflammation caused by UFs may represent a novel therapeutic strategy for UFs and potentially improve reproductive outcomes in women with symptomatic UFs.
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Affiliation(s)
- Hiroshi Ishikawa
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.
| | - Yuki Goto
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Chigusa Hirooka
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Eri Katayama
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Nao Baba
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Meika Kaneko
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yoshiko Saito
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tatsuya Kobayashi
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan; Department of Regulatory Science, Research Promotion Unit, School of Medical Science, Fujita Health University, Aichi, Japan; Fujita Health University Haneda clinic, Tokyo, Japan
| | - Kaori Koga
- Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
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Thompson A, Evans M, Weix P. Management guidelines for incidental uterine surgery in early pregnancy: a case report of a robotic myomectomy at 4 weeks gestation after a false-negative pregnancy test. F S Rep 2024; 5:219-222. [PMID: 38983733 PMCID: PMC11228875 DOI: 10.1016/j.xfre.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 07/11/2024] Open
Abstract
Objective To share our case and offer guidance to practitioners on the management of incidental uterine surgery in early pregnancy. Although elective uterine surgery should be avoided during pregnancy, there is always a chance of undetected pregnancy at the time of surgery, even after all precautions have been taken. There is currently minimal literature on the management and outcomes of uterine surgery during pregnancy. Design Case report. Setting University Hospital. Patient A 42-year-old G1P1 female with symptomatic fibroids desiring fertility-sparing surgery was retroactively found to be 4 weeks pregnant at the time of surgery, even after a negative pregnancy test and low suspicion for pregnancy under Centers for Disease Control and Prevention guidelines. Intervention Robotic-assisted laparoscopic myomectomy performed with a false-negative urine pregnancy test at the time of surgery. Main Outcome Measures Guidance for surveillance and management options during continued pregnancy after robotic uterine surgery and cavity disruption by a uterine manipulator performed at 4 weeks gestation that went undetected at the time of surgery. Results The patient was able to undergo an uncomplicated delivery by cesarean section at 38 weeks and delivered a healthy infant. Conclusion Using a multidisciplinary approach, we describe guidelines for antepartum surveillance uterine surgery during an undetected pregnancy, which resulted in the delivery of a term healthy infant.
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Affiliation(s)
- Abaigeal Thompson
- Department of Obstetrics and Gynecology, UT Southwestern Medical Center, Dallas, Texas
| | - Melanie Evans
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, UT Southwestern Medical Center, Dallas, Texas
| | - Patrick Weix
- Division of Minimally Invasive Gynecologic Surgery, Department of Obstetrics and Gynecology, UT Southwestern Medical Center, Dallas, Texas
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Li H, Hu Z, Fan Y, Hao Y. The influence of uterine fibroids on adverse outcomes in pregnant women: a meta-analysis. BMC Pregnancy Childbirth 2024; 24:345. [PMID: 38710995 PMCID: PMC11071265 DOI: 10.1186/s12884-024-06545-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 04/25/2024] [Indexed: 05/08/2024] Open
Abstract
OBJECTIVE The objective of the meta-analysis was to determine the influence of uterine fibroids on adverse outcomes, with specific emphasis on multiple or large (≥ 5 cm in diameter) fibroids. MATERIALS AND METHODS We searched PubMed, Embase, Web of Science, ClinicalTrials.gov, China National Knowledge Infrastructure (CNKI), and SinoMed databases for eligible studies that investigated the influence of uterine fibroids on adverse outcomes in pregnancy. The pooled risk ratio (RR) of the variables was estimated with fixed effect or random effect models. RESULTS Twenty-four studies with 237 509 participants were included. The pooled results showed that fibroids elevated the risk of adverse outcomes, including preterm birth, cesarean delivery, placenta previa, miscarriage, preterm premature rupture of membranes (PPROM), placental abruption, postpartum hemorrhage (PPH), fetal distress, malposition, intrauterine fetal death, low birth weight, breech presentation, and preeclampsia. However, after adjusting for the potential factors, negative effects were only seen for preterm birth, cesarean delivery, placenta previa, placental abruption, PPH, intrauterine fetal death, breech presentation, and preeclampsia. Subgroup analysis showed an association between larger fibroids and significantly elevated risks of breech presentation, PPH, and placenta previa in comparison with small fibroids. Multiple fibroids did not increase the risk of breech presentation, placental abruption, cesarean delivery, PPH, placenta previa, PPROM, preterm birth, and intrauterine growth restriction. Meta-regression analyses indicated that maternal age only affected the relationship between uterine fibroids and preterm birth, and BMI influenced the relationship between uterine fibroids and intrauterine fetal death. Other potential confounding factors had no impact on malposition, fetal distress, PPROM, miscarriage, placenta previa, placental abruption, and PPH. CONCLUSION The presence of uterine fibroids poses increased risks of adverse pregnancy and obstetric outcomes. Fibroid size influenced the risk of breech presentation, PPH, and placenta previa, while fibroid numbers had no impact on the risk of these outcomes.
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Affiliation(s)
- Hong Li
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zhonghua Hu
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yuyan Fan
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yingying Hao
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, China.
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Tabakova N, Sparić R, Tinelli A. Reflections on Postpartum Hysterectomy as a Possible Complication of Cesarean Myomectomy: A Long Debate. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:594. [PMID: 38674240 PMCID: PMC11052403 DOI: 10.3390/medicina60040594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024]
Abstract
Uterine fibroids are common benign tumors found in fertile women. Numerous obstetrical issues, such as dystocia during labor, fetal hypotrophy, a ruptured amniotic sac, early labor, low-birth-weight newborns, etc., are associated with fibrous pregnant uteri. Cesarean myomectomy is not a common procedure because of the possibility of postpartum hysterectomy or a potentially lethal hemorrhage. For the chosen topic, we present two instances of emergency postpartum hysterectomies following cesarean myomectomy. After a cesarean myomectomy, two women experienced a perioperative hemorrhage that required a postpartum hysterectomy without a salpingo-oophorectomy. A postpartum hysterectomy was required in every instance due to the failure of additional hemostatic techniques to control the bleeding after the cesarean myomectomy. In every case, the location and number of fibroids-rather than their size-were the primary factors leading to the postpartum hysterectomy. In order to ensure that the patient is safe and that the advantages outweigh the dangers, the current trends in cesarean myomectomy include aiming to conduct the procedure either electively or when it offers an opportunity. The treatment is still up for debate because it is unknown how dangerous a second hysterectomy is for people who have had a cesarean myomectomy.
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Affiliation(s)
- Nikoleta Tabakova
- Department of Obstetrics and Gynecology, Medical University Varna, Marin Drinov Street No. 55, 9002 Varna, Bulgaria
- Obstetrics and Gynecology Hospital SBAGAL Varna, 9000 Varna, Bulgaria
| | - Radmila Sparić
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
- Clinic for Gynecology and Obstetrics, University Clinical Centre of Serbia, 11000 Belgrade, Serbia
| | - Andrea Tinelli
- Department of Obstetrics and Gynecology, 73100 Scorrano, Lecce, Italy;
- CERICSAL (CEntro di RIcerca Clinico SALentino), “Veris delli Ponti Hospital”, 73100 Scorrano, Lecce, Italy
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Comparison of cesarean delivery outcome after robotic and laparoscopic myomectomy. Taiwan J Obstet Gynecol 2023; 62:12-15. [PMID: 36720523 DOI: 10.1016/j.tjog.2022.06.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2022] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE The aim of this study was to determine whether robotic myomectomy (RM) resulted in any measurable clinical improvement over laparoscopic myomectomy (LM) in subsequent cesarean delivery. MATERIALS AND METHODS The medical records of 273 patients who had undergone LM or RM followed by subsequent cesarean delivery for the period of September 2015 to December 2020 were retrospectively reviewed. The patients were divided into LM (n = 222) and RM (n = 51) groups. The cesarean delivery outcomes between the two groups were compared. RESULTS RM had significantly more myomas removed (6.0 ± 4.8 vs. 3.6 ± 3.5, p < 0.001) and a larger size of largest myoma (7.7 ± 2.4 vs. 6.1 ± 2.4, p = 0.002) at myomectomy compared with LM. However, there were no significant differences in the groups' surgical characteristics at cesarean section, in their pregnancy complications, or in adhesion formation. CONCLUSIONS Although more and larger myomas were removed in the RM group, RM showed similar cesarean delivery outcomes and adhesion formation to LM.
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Mahalingam M, Hu M, Schointuch M, Szychowski JM, Harper L, Owen J, Sinkey R. Uterine myomas: effect of prior myomectomy on pregnancy outcomes. J Matern Fetal Neonatal Med 2022; 35:8492-8497. [PMID: 34615420 PMCID: PMC10961099 DOI: 10.1080/14767058.2021.1984424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 09/19/2021] [Accepted: 09/20/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Reproductive aged women with fibroids must weigh the risks and benefits of preconception myomectomy. Women with fibroids may have higher rates of fetal growth restriction (FGR) and stillbirth; however, there is a paucity of data on the impact of myomectomy on pregnancy outcomes. We compared perinatal outcomes in women with prior myomectomy versus those with no prior myomectomy and at least one fibroid ≥ 5 cm. METHODS Retrospective cohort study of women at a single center who delivered between 2008 and 2017 with a viable intrauterine pregnancy at initial ultrasound scan and either prior myomectomy, or, in the no-myomectomy cohort, at least one fibroid ≥ 5 cm on a prenatal scan performed at < 21 weeks' gestation (wga). Pregnancies complicated by major congenital anomalies were excluded. Primary outcome was preterm birth (PTB) < 37wga. Secondary outcomes included rates of spontaneous loss, cesarean delivery (CD), abnormal placentation, malpresentation, FGR, birthweight, birthweight percentile, estimated blood loss (EBL), blood transfusion, and neonatal survival to discharge. RESULTS A total of 290 women met inclusion criteria: 70 had a prior myomectomy, 220 women had ≥1 fibroid ≥5cm. Women with prior myomectomy were older, more likely to have private insurance, and more likely used artificial reproductive technology to conceive; 20% with prior myomectomy still had at least one ≥ 5 cm myoma on their obstetric scan. Rates of spontaneous loss were lower in the prior myomectomy group (1.4% vs 7.3%; p = .08). Of the 273 pregnancies continuing beyond 20 weeks, women with prior myomectomy had significantly more PTBs (35% vs. 21%, p = .02) and significantly different primary birth indications (p < .0001). However, after controlling for late preterm, prelabor cesareans recommended by providers in the myomectomy cohort, the difference in PTB rates was not significant (p = .13). The myomectomy group had more CDs (88% vs. 53%, p < .0001), higher EBL (1250 mL vs. 811 mL, p = .04), and a trend toward more blood transfusions (16% vs 8%, p = .05). Other selected outcomes were similar, including rates of FGR. CONCLUSIONS Women with prior myomectomy had significantly more PTBs, due in part to more preterm, prelabor cesareans in the late preterm period. Otherwise, prior myomectomy did not confer appreciable obstetric or perinatal benefits, as patients had more CDs, and higher EBL. Recommendations to perform preterm prelabor cesareans in this population may explain some of the PTB disparity. The effect of prior myomectomy on early pregnancy loss and infertility requires further study.
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Affiliation(s)
- Mythreyi Mahalingam
- Center for Women’s Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Muhan Hu
- Center for Women’s Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL, USA
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Monica Schointuch
- Center for Women’s Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jeff M. Szychowski
- Center for Women’s Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lorie Harper
- Department of Women’s Health, University of Texas at Austin, Dell Medical School, Austin, TX, USA
| | - John Owen
- Center for Women’s Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rachel Sinkey
- Center for Women’s Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL, USA
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The risk of preterm birth in women with uterine fibroids: A systematic review and meta-analysis. PLoS One 2022; 17:e0269478. [PMID: 35653408 PMCID: PMC9162311 DOI: 10.1371/journal.pone.0269478] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 05/20/2022] [Indexed: 01/07/2023] Open
Abstract
Background Fibroids have been identified as a possible risk factor for preterm birth, however, the magnitude of this risk is unclear. Our objective was to determine the risk of total, spontaneous, and medically indicated preterm birth in women with fibroids. Methods A literature search was performed on 9 June 2021. We selected studies reporting on preterm birth in women with and without fibroids. Fibroids had to be diagnosed by routine ultrasound before or during pregnancy. Main outcomes were total preterm birth <37, <34, <32, and <28 weeks of gestation, and spontaneous and medically indicated preterm birth. Two authors independently performed study selection, data extraction and quality assessment. We performed quality assessment with the Newcastle-Ottawa scale. Meta-analyses were presented as Odds Ratios (ORs) with 95% Confidence Intervals (95%CIs). Main results The search yielded 2078 unique articles of which 11 were included. Meta-analysis for preterm birth <37 weeks of gestation included 256,650 singleton deliveries: 12,309 with fibroids and 244,341 without fibroids. Women with fibroids had a higher rate of preterm birth (11.6% versus 9.0%; OR 1.66, 95%CI 1.29–2.14). Fibroids were also associated with preterm birth <34 (OR 1.88, 95%CI 1.34–2.65), <32 (OR 2.03, 95%CI 1.40–2.95) and <28 (OR 2.24, 95%CI 1.45–3.47) weeks of gestation. Data on type of preterm birth was limited: one study showed a significant association of fibroids with spontaneous preterm birth and another with indicated preterm birth. The main limitations of the included studies were the lack of correction for confounders, the risk of ascertainment bias due to possible underreporting of fibroids, and the substantial heterogeneity between studies. Conclusions Our results suggest fibroids are associated with an increased risk of preterm birth, with a stronger risk at earlier gestational ages. We encourage further research to clarify the association between fibroids and preterm birth by systematic myometrial assessment in pregnancy. Registration Prospero database [CRD42020186976].
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Farland LV, Stern JE, Liu CL, Cabral HJ, Coddington CC, Diop H, Dukhovny D, Hwang S, Missmer SA. Pregnancy outcomes among women with endometriosis and fibroids: registry linkage study in Massachusetts. Am J Obstet Gynecol 2022; 226:829.e1-829.e14. [PMID: 35108504 DOI: 10.1016/j.ajog.2021.12.268] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 12/21/2021] [Accepted: 12/29/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND Endometriosis and uterine fibroids are common gynecologic conditions associated with a greater risk for infertility. Previous research has suggested that these conditions are associated with adverse pregnancy outcomes, potentially because of increased utilization of fertility treatments. OBJECTIVE Our objective was to investigate whether women with a history of endometriosis or fibroids had a greater risk for adverse pregnancy outcomes and whether this risk varied by infertility history and fertility treatment utilization. STUDY DESIGN Deliveries (2013-2017) recorded in Massachusetts' vital records were linked to assisted reproductive technology data, hospital stays, and all-payer claims database. We identified endometriosis and fibroids diagnoses via the all-payer claims database before index delivery. Adjusted relative risks for pregnancy complications were modeled using generalized estimating equations with a log link and Poisson distribution. The influence of subfertility or infertility and assisted reproductive technology was also investigated. RESULTS Among 91,825 deliveries, 1560 women had endometriosis and 4212 had fibroids. Approximately 30% of women with endometriosis and 26% of women with fibroids experienced subfertility or infertility without utilizing assisted reproductive technology, and 34% of women with endometriosis and 21% of women with fibroids utilized assisted reproductive technology for the index delivery. Women with a history of endometriosis or fibroids were at a greater risk for pregnancy-induced hypertension, preeclampsia, or eclampsia (endometriosis relative risk, 1.17; fibroids relative risk, 1.08), placental abnormalities (endometriosis relative risk, 1.65; fibroids relative risk, 1.38), and cesarean delivery (endometriosis relative risk, 1.22; fibroids relative risk, 1.17) than women with no history of those conditions. Neonates born to women with a history of endometriosis or fibroids were also at a greater risk for preterm birth (endometriosis relative risk, 1.24; fibroids relative risk, 1.17). Associations between fibroids and low birthweight varied by fertility status or assisted reproductive technology (P homogeneity=.01) and were stronger among noninfertile women. CONCLUSION Endometriosis or fibroids increased the risk for adverse pregnancy outcomes, possibly warranting differential screening or treatment.
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Wang X, Wang G, Han R, Gao M, Wang F, Hong Y, Chen Q. Uterine fibroids increase the risk of preterm birth and other adverse birth events: a systematic review and meta-analysis. Transl Pediatr 2022; 11:978-986. [PMID: 35800281 PMCID: PMC9253953 DOI: 10.21037/tp-22-215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 06/14/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Uterine fibroids may cause preterm birth. This meta-analysis evaluates the effect of uterine fibroids on the risk of preterm birth and other obstetric outcomes. METHODS Using the literature review method, the databases PubMed, Medline, Embase and Central were retrieved to obtain relevant research literature. The selected studies were analyzed and evaluated. The literature was a cohort study or a case-control study of pregnant women as the research object and uterine fibroids as the exposure factor to observe adverse events during pregnancy. The chi-square test was used to test for heterogeneity. Subgroup analyses were used to explore sources of heterogeneity. Publication bias was assessed using Egger's test. Enumeration data were described by odds ratio (OR). Measurement data were described by mean difference (MD). Calculate the confidence interval (CI). RESULTS A total of 11 studies were included in this study, including 7 cohort studies and 4 case-control studies, with a total of 313,913 women. The probability of uterine fibroids among women was 3.99%. The results of meta-analysis showed that women with uterine fibroids experienced preterm birth <37 weeks (OR =1.43, 95% CI: 1.25 to 1.64, P<0.00001), preterm birth <34 weeks (OR =1.73, 95% CI: 1.34 to 2.25, P<0.0001), premature rupture of membranes (OR =1.38, 95% CI: 1.08 to 1.75, P=0.009), placental abruption (OR =1.60, 95% CI: 1.20 to 2.14, P=0.001), cesarean section (OR =2.09, 95% CI: 1.69 to 2.58, P<0.00001), and postpartum hemorrhage (OR =2.95, 95% CI: 1.86 to 4.66, P<0.00001) were all at higher risk, and the mean gestational age at delivery [mean difference (MD) =-0.58, 95% CI: -0.66 to -0.51, P<0.00001] and birth weight (MD =-117.82, 95% CI: -155.19 to -80.45, P<0.00001) were lower. Egger's test indicated that there was no publication bias among the included studies (P>0.05). CONCLUSIONS Pregnant women with uterine fibroids are at higher risk for preterm birth and other adverse obstetric outcomes and require closer monitoring.
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Affiliation(s)
- Xiuling Wang
- Infection and Disease Control Section, Haikou Maternal and Child Health Hospital, Haikou, China
| | - Gui Wang
- Department of Obstetrics and Gynecology, Tunchang People's Hospital, Tunchang, China
| | - Ru Han
- Department of Obstetrics and Gynecology, Haikou Maternal and Child Health Hospital, Haikou, China
| | - Mei Gao
- Department of Obstetrics, Haikou Maternal and Child Health Hospital, Haikou, China
| | - Fangmin Wang
- Department of Obstetrics and Gynecology, Haikou Hospital of Traditional Chinese Medicine, Haikou, China
| | - Yarong Hong
- Department of Obstetrics and Gynecology, Tunchang People's Hospital, Tunchang, China
| | - Qiuxia Chen
- Department of Obstetrics, Hainan Women and Children's Medical Center, Haikou, China
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Intramural myomas more than 3-4 centimeters should be surgically removed before in vitro fertilization. Fertil Steril 2021; 116:945-958. [PMID: 34579828 DOI: 10.1016/j.fertnstert.2021.08.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 12/29/2022]
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Sundermann AC, Aldridge TD, Hartmann KE, Jones SH, Torstenson ES, Edwards DRV. Uterine fibroids and risk of preterm birth by clinical subtypes: a prospective cohort study. BMC Pregnancy Childbirth 2021; 21:560. [PMID: 34404387 PMCID: PMC8369624 DOI: 10.1186/s12884-021-03968-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/09/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Fibroids are present in approximately one in ten pregnancies and are inconsistently linked with preterm birth. We sought to determine the association between fibroids and preterm birth in a prospective cohort with standardized research ultrasounds for characterizing fibroids in early pregnancy while accounting for the clinical paths that precede preterm birth. METHODS Participants who were pregnant or planning a pregnancy were recruited from communities in three states between 2000 and 2012. Members of this prospective cohort had a research ultrasound in the first trimester to establish pregnancy dating and to record detailed information about the presence, size, number, and location of fibroids. Baseline information from time of enrollment and a detailed first trimester interview contributed key information about candidate confounders. Birth outcomes, including clinical classification of type of preterm birth (preterm labor, preterm premature rupture of membranes, and medically indicated preterm birth) were cross-validated from participant report, labor and delivery records, and birth certificate data. RESULTS Among 4,622 women with singleton pregnancies, 475 had at least one fibroid (10.3%) and 352 pregnancies resulted in preterm birth (7.6%). Prevalence of fibroids was similar for women with preterm and term births (10.2% vs. 10.3%). Fibroids were not associated with increased risk of preterm birth after taking into account confounding (risk ratio adjusted for race/ethnicity and maternal age, 0.88; 95% confidence interval, 0.62-1.24) nor any clinical subtype of preterm birth. No fibroid characteristic or combination of characteristics was associated with risk. CONCLUSIONS If fibroids increase risk of preterm birth, the effect is substantially smaller than previous estimates. Given lack of effect in a large population of women from the general population, rather than higher risk academic tertiary populations previously most studied, we encourage a reconsideration of the clinical impression that presence of fibroids is a major risk factor for preterm birth.
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Affiliation(s)
- Alexandra C Sundermann
- Vanderbilt Epidemiology Center, Institute for Medicine and Public Health, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA
- Women's Health Research at Vanderbilt, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA
| | - Tiara D Aldridge
- Division of Quantitative Sciences, Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, 1211 Medical Center Drive, Nashville, TN, 37212, USA
| | - Katherine E Hartmann
- Vanderbilt Epidemiology Center, Institute for Medicine and Public Health, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA.
- Women's Health Research at Vanderbilt, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA.
- Division of Quantitative Sciences, Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, 1211 Medical Center Drive, Nashville, TN, 37212, USA.
| | - Sarah H Jones
- Vanderbilt Epidemiology Center, Institute for Medicine and Public Health, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA
- Women's Health Research at Vanderbilt, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA
| | - Eric S Torstenson
- Vanderbilt Epidemiology Center, Institute for Medicine and Public Health, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA
| | - Digna R Velez Edwards
- Vanderbilt Epidemiology Center, Institute for Medicine and Public Health, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA
- Women's Health Research at Vanderbilt, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN, 37203, USA
- Division of Quantitative Sciences, Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, 1211 Medical Center Drive, Nashville, TN, 37212, USA
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12
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Haviv E, Schwarzman P, Bernstein EH, Wainstock T, Weintraub AY, Leron E, Erez O. Subsequent pregnancy outcomes after abdominal vs. laparoscopic myomectomy. J Matern Fetal Neonatal Med 2021; 35:8219-8225. [PMID: 34404312 DOI: 10.1080/14767058.2021.1967315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To determine whether abdominal (open) vs. laparoscopic myomectomy affects the obstetrical outcomes of subsequent pregnancies. METHODS A retrospective cohort study was conducted at a tertiary university medical center. The study population included women who had a documented birth following a myomectomy at our institution between the years 1997 and 2018. The obstetrical characteristics and immediate perinatal outcomes of the subsequent pregnancy following open vs. laparoscopic myomectomy were collected and compared. Data were retrieved from patients' medical records via the institutional computerized database. Cases that lacked detailed surgery and delivery reports were excluded. Data were analyzed using a chi-square test for categorical variables and one-way ANOVA for continuous variables. A p-value <.05 was considered statistically significant. RESULTS During the study period, 57 women met the inclusion criteria, of whom 66.6% (38/57) had an open and 33.3% (19/57) had a laparoscopic myomectomy. Women who underwent an open myomectomy had a higher rate of cesarean birth than those in the laparoscopic group (89.5 vs. 42.1%, p < .001). No cases of severe maternal or perinatal complications, uterine ruptures, or placental abruptions were identified in either study group. No other significant differences were noted between the two types of myomectomy. CONCLUSION Open myomectomy is associated with a higher rate of cesarean delivery than laparoscopic. No severe adverse maternal or neonatal outcomes were detected in either study group.
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Affiliation(s)
- Elihai Haviv
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Polina Schwarzman
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eli H Bernstein
- The Medical School for International Health, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tamar Wainstock
- Department of Epidemiology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Adi Y Weintraub
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Elad Leron
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Offer Erez
- Division of Obstetrics & Gynecology, Maternity Department "D", Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Department of Obstetrics and Gynecology, School of Medicine, Wayne State University, Detroit, MI, USA
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13
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Jiang B, He WC, Yu JY, Wei SS, Zhang XJ. History of IUD utilization and the risk of preterm birth: a cohort study. Arch Gynecol Obstet 2021; 305:349-358. [PMID: 34331124 DOI: 10.1007/s00404-021-06158-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 07/21/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To explore whether a history of IUD use could increase the risk of subsequent preterm birth. METHODS We performed a cohort study of 24,496 multipara aged 19-48 years in Dongguan City. Each subject was followed up for 1 year, and 12,508 women obtained pregnancy outcomes. They were divided into 2 groups: 2130 subjects with IUD use history (exposure group), and 10,378 subjects without IUD use history (control group). The exposure group will remove the IUD before pregnancy. The primary outcomes were preterm birth (less than 37 weeks of gestation) and early preterm birth (less than 34 weeks of gestation). We used log-binomial regression to estimate adjusted risk ratios (aRR) of preterm birth and early preterm birth for women with a history of IUD. According to the different adjusted baseline data, three regression models were established, and the propensity matching score method was also used to verify the stability of the results. RESULTS The delivery rate of women with IUD history was 51.24%, and that of women without IUD was 51.03% (2 = 0.063, P = 0.802). Six hundred and eighty-five women had preterm birth (5.48%, 95% CI 5.08-5.88) and 133 women had early preterm birth (1.06%, 95% CI 0.83-1.24). Compared with the control group, the incidence of preterm birth and early preterm birth in the exposure group were significantly lower. The results are stable in all four models. Subgroup analysis also supported the result. This study also found that the longer the women used IUD before pregnancy, the younger the age of first using IUD, and the shorter the time from condom removal to pregnancy, the lower the incidence of premature birth. CONCLUSION The women with a history of IUD use are less likely to have premature birth after the IUD is removed. More prospective studies are needed to confirm it.
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Affiliation(s)
- Bi Jiang
- Dongguan Maternal and Child Health Care Hospital, No.99 Zhenxing Road, Dongcheng District, Dongguan City, 523112, Guangdong Province, China
| | - Wei-Chao He
- Dongguan Maternal and Child Health Care Hospital, No.99 Zhenxing Road, Dongcheng District, Dongguan City, 523112, Guangdong Province, China
| | - Jing-Yun Yu
- Dongguan Maternal and Child Health Care Hospital, No.99 Zhenxing Road, Dongcheng District, Dongguan City, 523112, Guangdong Province, China
| | - Si-Si Wei
- Dongguan Maternal and Child Health Care Hospital, No.99 Zhenxing Road, Dongcheng District, Dongguan City, 523112, Guangdong Province, China
| | - Xin-Jian Zhang
- Dongguan Maternal and Child Health Care Hospital, No.99 Zhenxing Road, Dongcheng District, Dongguan City, 523112, Guangdong Province, China.
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14
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Coutinho LM, Assis WA, Spagnuolo-Souza A, Reis FM. Uterine Fibroids and Pregnancy: How Do They Affect Each Other? Reprod Sci 2021; 29:2145-2151. [PMID: 34142343 DOI: 10.1007/s43032-021-00656-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/09/2021] [Indexed: 01/20/2023]
Abstract
The present narrative review is aimed to rekindle discussion regarding whether and how uterine leiomyoma and pregnancy may impact each other. Although fibroids are hormone-dependent lesions, their growth during pregnancy seems to have a nonlinear trend. Besides placental estrogens and progesterone, an array of endocrine and paracrine factors affect fibroid blood supply, growth rate, and risk of degeneration along the gestational and puerperal periods. According to current evidence, the presence of leiomyomas might increase the risk of some adverse pregnancy outcomes. Although a causative relation between fibroids and spontaneous abortion is questionable, the presence of multiple submucosal lesions in certain populations, such as infertile women, may increase the risk of pregnancy loss. Slightly increased risks of placenta previa, placental abruption and fetal malpresentation may occur, mainly due to the mechanical influence of multiple and large fibroids. Cesarean section and preterm birth rates are also probably increased in the presence of fibroids. The risk associations are based on meta-analyses of cohort studies (level of evidence 2a), retrospective cohort studies (2b), case-control (3a), and cross-sectional studies (3b), but with a predominantly low risk of bias. For evaluating the growth pattern of leiomyomas and their real influence on obstetric outcomes, future studies should enroll women with fibroids diagnosed prior to pregnancy and follow them prospectively throughout the gestation and puerperium.
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Affiliation(s)
- Larissa M Coutinho
- Department of Maternal and Child Health, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil.,Department of Obstetrics and Gynecology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Wiviane A Assis
- Department of Obstetrics and Gynecology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ananda Spagnuolo-Souza
- Department of Obstetrics and Gynecology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fernando M Reis
- Department of Obstetrics and Gynecology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. .,Division of Human Reproduction, Department of Ob/Gyn, Hospital das Clínicas, UFMG, Av. Alfredo Balena, 110, 9° andar, Belo Horizonte, MG, 30130-100, Brazil.
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15
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Murata T, Kyozuka H, Endo Y, Fukuda T, Yasuda S, Yamaguchi A, Sato A, Ogata Y, Shinoki K, Hosoya M, Yasumura S, Hashimoto K, Nishigori H, Fujimori K. Preterm Deliveries in Women with Uterine Myomas: The Japan Environment and Children's Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18052246. [PMID: 33668326 PMCID: PMC7967712 DOI: 10.3390/ijerph18052246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/11/2021] [Accepted: 02/17/2021] [Indexed: 11/16/2022]
Abstract
This study aimed to clarify the association between uterine myomas and preterm birth (PTB), preterm premature rupture of membranes (pPROM), and intrauterine infection (II). The study was based on data from the Japan Environment and Children’s Study, a nationwide birth-cohort study. Data of 86,370 women with singleton births after 22 weeks of gestation (with uterine myomas, n = 5354) were retrospectively analyzed. Using logistic regression, adjusted odds ratios (aORs) for PTB, pPROM, and II were calculated considering women without uterine myomas as the reference. Additionally, the effects of II on the incidence of PTB and pPROM were evaluated. In women with uterine myomas, the aORs for PTB before 37 and 34 weeks, pPROM, and II were 1.37 (95% confidence interval, 1.22–1.54), 1.61 (1.27–2.05), 1.65 (1.33–2.04), and 1.05 (0.75–1.46), respectively. The aORs for PTB and pPROM in women with II and uterine myomas were not significantly increased. Uterine myomas during pregnancy were associated with an increased incidence of PTB and pPROM. However, II in women with uterine myomas was not associated with an increased incidence of PTB or pPROM. These findings suggest a potential risk of occult PTB in pregnant women with uterine myomas.
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Affiliation(s)
- Tsuyoshi Murata
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
- Correspondence: ; Tel.: +81-24-547-1290
| | - Hyo Kyozuka
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Yuta Endo
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Toma Fukuda
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Shun Yasuda
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Akiko Yamaguchi
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Akiko Sato
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
| | - Yuka Ogata
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
| | - Kosei Shinoki
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
| | - Mitsuaki Hosoya
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Pediatrics, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Seiji Yasumura
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Public Health, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Koichi Hashimoto
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Pediatrics, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Hidekazu Nishigori
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Fukushima Medical Center for Children and Women, Fukushima Medical University, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Keiya Fujimori
- Fukushima Regional Center for the Japan Environment and Children’s Study, 1 Hikarigaoka, Fukushima 960-1295, Japan; (H.K.); (Y.E.); (T.F.); (S.Y.); (A.Y.); (A.S.); (Y.O.); (K.S.); (M.H.); (S.Y.); (K.H.); (H.N.); (K.F.)
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan
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Rault E, Delorme P, Goffinet F, Girault A. Impact of history of myomectomy on preterm birth risk in women with a leiomyomatous uterus: a propensity score analysis. BMC Pregnancy Childbirth 2020; 20:720. [PMID: 33228570 PMCID: PMC7686718 DOI: 10.1186/s12884-020-03413-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 11/12/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To evaluate if women with a history of myomectomy have a modified preterm birth risk compared to women with myomas during pregnancy. METHODS Retrospective cohort study including all women with a history of myomectomy (operated group) or uterine myomas during pregnancy (unoperated group) who delivered in a tertiary center between January, 2011 and December, 2017. The operated group included women who had a myomectomy history with or without myomas during the ongoing pregnancy. The unoperated group included women with uterine myoma(s) seen on at least one ultrasound during pregnancy without history of myomectomy. The primary outcome was preterm birth < 37 weeks, and the secondary outcome spontaneous preterm birth < 37 weeks. To control for confounding factors, a propensity score approach was used. Two sensitivity analysis were performed, one repeating the analysis using the propensity score after excluding operated women with persistent myomas and one using a classical multivariable logistic regression model. RESULTS The cohort included 576 women: 283 operated women and 293 unoperated women. The rate of preterm birth was similar in the two groups: 12.6% in the unoperated group and 12.0% in the operated group (p = 0.82). No difference in preterm birth risk was shown between unoperated and operated women in the cohort matched on the propensity score: OR 0.86; 95%CI [0.47-1.59]. These results were consistent for spontaneous preterm birth (OR 1.61; 95%CI [0.61-4.23]) and for the sensitivity analyses. CONCLUSION In women with a leiomyomatous uterus, a history of myomectomy is not associated with a reduced preterm birth risk.
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Affiliation(s)
- Emmanuel Rault
- Maternité Port Royal, AP-HP, Hôpital Cochin, FHU PREMA, F-75014, Paris, France
| | - Pierre Delorme
- Maternité Port Royal, AP-HP, Hôpital Cochin, FHU PREMA, F-75014, Paris, France.,Université de Paris, INSERM UMR 1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epopé), Center for Epidemiology and Statistics, FHU PREMA, Université de Paris, 123 boulevard Port Royal, 75014, Paris, France
| | - François Goffinet
- Maternité Port Royal, AP-HP, Hôpital Cochin, FHU PREMA, F-75014, Paris, France.,Université de Paris, INSERM UMR 1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epopé), Center for Epidemiology and Statistics, FHU PREMA, Université de Paris, 123 boulevard Port Royal, 75014, Paris, France
| | - Aude Girault
- Maternité Port Royal, AP-HP, Hôpital Cochin, FHU PREMA, F-75014, Paris, France. .,Université de Paris, INSERM UMR 1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epopé), Center for Epidemiology and Statistics, FHU PREMA, Université de Paris, 123 boulevard Port Royal, 75014, Paris, France.
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17
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Orlando M, Kollikonda S, Hackett L, Kho R. Non-hysteroscopic Myomectomy and Fertility Outcomes: A Systematic Review. J Minim Invasive Gynecol 2020; 28:598-618.e1. [PMID: 33065260 DOI: 10.1016/j.jmig.2020.10.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/04/2020] [Accepted: 10/08/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To perform a systematic review of the literature to identify best practices for nonhysteroscopic myomectomy for women with myomas who desire future fertility. The focus areas included factors associated with conception and pregnancy outcomes after myomectomy, impact of surgical route (laparotomic, laparoscopic, and the incorporation of robot assistance), and preoperative findings and surgical techniques that have an impact on reproduction. DATA SOURCES Librarian-led electronic searches of the Ovid MEDLINE, Ovid Embase, and Cochrane CENTRAL databases were performed from inception to February 2020. A targeted reference review was performed to update the original searches. METHODS OF STUDY SELECTION The participants were women of reproductive age with myomas who underwent myoma removal surgery through laparotomic or laparoscopic approaches. The fertility outcomes included markers for ovarian reserve, clinical pregnancy rates, and pregnancy outcomes. We performed quality assessment using National Institutes of Health Study Quality Assessment Tools and developed clinical recommendations graded according to the strength of the evidence. TABULATION, INTEGRATION, AND RESULTS The initial search identified 2163 studies, of which 51 met the inclusion criteria. These consisted of 11 studies that focused on the factors associated with conception or pregnancy outcomes after myomectomy, 10 studies that examined the route of nonhysteroscopic myomectomy, and 30 that were related to intraoperative techniques and findings. Overall, younger age, lower myoma number, and distortion of the endometrial cavity were associated with improved reproductive outcomes after myomectomy. The route of nonhysteroscopic myomectomy and intraoperative uterine artery occlusion did not significantly affect pregnancy rates or outcomes. Adhesion barriers present a possible target for further research. CONCLUSION This study provides insights into patient selection and intraoperative techniques for nonhysteroscopic myomectomy. Further research with well-designed clinical trials is needed to highlight the relationships between myoma characteristics (International Federation of Gynecology and Obstetrics type, location, and size) and reproductive outcomes.
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Affiliation(s)
- Megan Orlando
- Department of Obstetrics and Gynecology, Women's Health Institute (Drs. Orlando, Kollikonda, and Kho); Floyd D. Loop Alumni Library (Ms. Hackett), Cleveland Clinic, Cleveland, Ohio.
| | - Swapna Kollikonda
- Department of Obstetrics and Gynecology, Women's Health Institute (Drs. Orlando, Kollikonda, and Kho); Floyd D. Loop Alumni Library (Ms. Hackett), Cleveland Clinic, Cleveland, Ohio
| | - Loren Hackett
- Department of Obstetrics and Gynecology, Women's Health Institute (Drs. Orlando, Kollikonda, and Kho); Floyd D. Loop Alumni Library (Ms. Hackett), Cleveland Clinic, Cleveland, Ohio
| | - Rosanne Kho
- Department of Obstetrics and Gynecology, Women's Health Institute (Drs. Orlando, Kollikonda, and Kho); Floyd D. Loop Alumni Library (Ms. Hackett), Cleveland Clinic, Cleveland, Ohio
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18
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Fonge YN, Carter AS, Hoffman MK, Sciscione AC, Klebanoff J. Obstetrical outcomes are unchanged after hysteroscopic myomectomy in women with submucosal fibroids. Am J Obstet Gynecol MFM 2020; 2:100192. [PMID: 33345912 DOI: 10.1016/j.ajogmf.2020.100192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/13/2020] [Accepted: 07/20/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Previous studies have demonstrated increased rates of poor obstetrical outcomes including preterm delivery, placental abruption, and intrauterine growth restriction in women with uterine leiomyomas. Currently, preconception myomectomy has not been reported to improve pregnancy rates or pregnancy outcomes in women with subserosal leiomyomas, and the data remain inconclusive for intramural fibroids. Pregnancy rates have been found to improve after the removal of submucosal fibroids. However, the effect of preconception myomectomy for submucosal fibroids on birth outcomes has yet to be examined. OBJECTIVE This study aimed to determine whether hysteroscopic excision of submucosal leiomyomas affects the rate of preterm delivery, among other obstetrical outcomes. STUDY DESIGN We performed a retrospective case-control study of women who underwent hysteroscopic resection of leiomyomas (cases) and controls of women who had submucosal fibroids at the time of their first-trimester ultrasounds. Women were included if they delivered a nonanomalous fetus beyond 20 weeks' gestation. A total of 73 cases were identified and matched with 219 controls (case-to-control ratio, 1:3). Subsequently, owing to multiple-gestation pregnancy, 11 patients were excluded from the case population and 4 patients from the control group. The final analysis included 277 women-62 cases and 215 controls. Our primary outcome was preterm delivery before 37 weeks' gestation. Prespecified secondary outcomes of interest were preterm delivery before 34 weeks' gestation, placental abruption, fetal malpresentation, intrauterine growth restriction, and rate of cesarean delivery. Data analysis was performed using univariate and multivariate statistics. RESULTS Cases and controls were similar with respect to age, race, body mass index, and mode of delivery. Cases were more likely to be primiparous (66% cases [42 of 62] vs 37% controls [80 of 215]; P=.00) and use assisted reproductive technology to conceive (22.6% cases [14 of 62] vs 7.0% controls [15 of 215]; P<.001). No differences were found in the rate of preterm delivery at <37 weeks' gestation (12.9% cases [8 of 62] vs 13.5% controls [29 of 215]; P=.89), preterm delivery at <34 weeks' gestation (4.84% cases [3 of 62] vs 6.97% controls [15 of 215]; P=.77), or other obstetrical outcomes. CONCLUSION Overall, women with submucosal uterine leiomyomas who undergo hysteroscopic removal have similar birth outcomes to those who do not.
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Affiliation(s)
- Yaneve N Fonge
- Department of Obstetrics and Gynecology, Christiana Care Health System, Newark, DE.
| | - Ashlie S Carter
- Department of Obstetrics and Gynecology, Christiana Care Health System, Newark, DE
| | - Matthew K Hoffman
- Department of Obstetrics and Gynecology, Christiana Care Health System, Newark, DE
| | - Anthony C Sciscione
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Christiana Care Health System, Newark, DE
| | - Jordan Klebanoff
- Department of Obstetrics and Gynecology, The George Washington University Hospital, Washington, DC
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19
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Pérez-Roncero GR, López-Baena MT, Ornat L, Cuerva MJ, Garcia-Casarrubios P, Chedraui P, Pérez-López FR. Uterine fibroids and preterm birth risk: A systematic review and meta-analysis. J Obstet Gynaecol Res 2020; 46:1711-1727. [PMID: 32633025 DOI: 10.1111/jog.14343] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 04/21/2020] [Accepted: 05/16/2020] [Indexed: 12/18/2022]
Abstract
AIM This study explored the association between the presence of uterine fibroids (UF), as determined by ultrasound, and preterm birth (PB) risk. METHODS Medline, Embase, Cochrane, Scopus and Web of Science databases. Studies reporting women with and without UF demonstrated by an ultrasound exam. The primary outcome was the risk of PB < 37 weeks of gestation in pregnancies with UF diagnosed by an obstetric ultrasound exam. Effects for dichotomous and continuous outcomes are, respectively, reported as risk ratios (RR) or mean differences and their 95% confidence intervals (CI). RESULTS Eighteen studies were included comprising 276 172 pregnancies to whom obstetric ultrasound assessment was performed for the presence/absence of UF. Women with UF were older (mean difference = 2.40 years, 95% CI 0.94-3.85) and were at higher risk of PB before 37 (RR = 1.43, 95% CI 1.27-1.60), 34 (RR = 1.79, 95% CI 1.32-2.42), 32 (RR = 1.94, 95% CI 1.33-2.85) and 28 (RR = 2.17, 95% CI 1.48-3.17) weeks as compared to those without UF (P < 0.01). In addition, women with UF were at higher risk of threatened preterm labor, preterm premature rupture of membranes, fetal malpresentation, placental abruption, lower gestational age and birthweight at delivery and a higher cesarean delivery rate. CONCLUSION Pregnant women with UF are at increased risk of PB and other adverse obstetric outcomes.
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Affiliation(s)
- Gonzalo R Pérez-Roncero
- Red de Investigación de Ginecología, Obstetricia y Reproducción, Instituto de Investigaciones Sanitarias de Aragón, Zaragoza, Spain
| | - María T López-Baena
- Red de Investigación de Ginecología, Obstetricia y Reproducción, Instituto de Investigaciones Sanitarias de Aragón, Zaragoza, Spain
| | - Lía Ornat
- Red de Investigación de Ginecología, Obstetricia y Reproducción, Instituto de Investigaciones Sanitarias de Aragón, Zaragoza, Spain.,Department of Obstetrics and Gynecology, University of Zaragoza Faculty of Medicine, Zaragoza, Spain
| | - Marcos J Cuerva
- Department of Obstetrics and Gynecology, Hospital Universitario La Paz, Madrid, Spain
| | | | - Peter Chedraui
- Instituto de Investigación e Innovación en Salud Integral, Facultad de Ciencias Médicas, Universidad Católica de Santiago de Guayaquil, Guayaquil, Ecuador.,Facultad de Ciencias de la Salud, Universidad Católica Nuestra Señora de la, Asunción, Paraguay
| | - Faustino R Pérez-López
- Red de Investigación de Ginecología, Obstetricia y Reproducción, Instituto de Investigaciones Sanitarias de Aragón, Zaragoza, Spain.,Department of Obstetrics and Gynecology, University of Zaragoza Faculty of Medicine, Zaragoza, Spain
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Conde-Agudelo A, Romero R, Nicolaides KH. Cervical pessary to prevent preterm birth in asymptomatic high-risk women: a systematic review and meta-analysis. Am J Obstet Gynecol 2020; 223:42-65.e2. [PMID: 32027880 DOI: 10.1016/j.ajog.2019.12.266] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/26/2019] [Accepted: 12/27/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Randomized controlled trials that have assessed the efficacy of cervical pessary to prevent preterm birth in asymptomatic high-risk women have reported conflicting results. OBJECTIVE To evaluate the efficacy and safety of cervical pessary to prevent preterm birth and adverse perinatal outcomes in asymptomatic high-risk women. DATA SOURCES MEDLINE, EMBASE, POPLINE, CINAHL, and LILACS (from their inception to October 31, 2019), Cochrane databases, Google Scholar, bibliographies, and conference proceedings. STUDY ELIGIBILITY CRITERIA Randomized controlled trials that compared cervical pessary with standard care (no pessary) or alternative interventions in asymptomatic women at high risk for preterm birth. STUDY APPRAISAL AND SYNTHESIS METHODS The systematic review was conducted according to the Cochrane Handbook guidelines. The primary outcome was spontaneous preterm birth <34 weeks of gestation. Secondary outcomes included adverse pregnancy, maternal, and perinatal outcomes. Pooled relative risks with 95% confidence intervals were calculated. Quality of evidence was assessed using the GRADE methodology. RESULTS Twelve studies (4687 women and 7167 fetuses/infants) met the inclusion criteria: 8 evaluated pessary vs no pessary in women with a short cervix, 2 assessed pessary vs no pessary in unselected multiple gestations, and 2 compared pessary vs vaginal progesterone in women with a short cervix. There were no significant differences between the pessary and no pessary groups in the risk of spontaneous preterm birth <34 weeks of gestation among singleton gestations with a cervical length ≤25 mm (relative risk, 0.80; 95% confidence interval, 0.43-1.49; 6 trials, 1982 women; low-quality evidence), unselected twin gestations (relative risk, 1.05; 95% confidence interval, 0.79-1.41; 1 trial, 1177 women; moderate-quality evidence), twin gestations with a cervical length <38 mm (relative risk, 0.75; 95% confidence interval, 0.41-1.36; 3 trials, 1128 women; low-quality evidence), and twin gestations with a cervical length ≤25 mm (relative risk; 0.72, 95% confidence interval, 0.25-2.06; 2 trials, 348 women; low-quality evidence). Overall, no significant differences were observed between the pessary and no pessary groups in preterm birth <37, <32, and <28 weeks of gestation, and most adverse pregnancy, maternal, and perinatal outcomes (low- to moderate-quality evidence for most outcomes). There were no significant differences in the risk of spontaneous preterm birth <34 weeks of gestation between pessary and vaginal progesterone in singleton gestations with a cervical length ≤25 mm (relative risk, 0.99; 95% confidence interval, 0.54-1.83; 1 trial, 246 women; low-quality evidence) and twin gestations with a cervical length <38 mm (relative risk, 0.73; 95% confidence interval, 0.46-1.18; 1 trial, 297 women; very low-quality evidence). Vaginal discharge was significantly more frequent in the pessary group than in the no pessary and vaginal progesterone groups (relative risks, ∼2.20; high-quality evidence). CONCLUSION Current evidence does not support the use of cervical pessary to prevent preterm birth or to improve perinatal outcomes in singleton or twin gestations with a short cervix and in unselected twin gestations.
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Affiliation(s)
- Agustin Conde-Agudelo
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI
| | - Roberto Romero
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD and Detroit, MI; Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI; Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI; Detroit Medical Center, Detroit, MI; Department of Obstetrics and Gynecology, Florida International University, Miami, FL.
| | - Kypros H Nicolaides
- Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London, UK
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21
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Impact of intramural non-cavity-distorting leiomyoma on placental histopathology and perinatal outcome in singleton live births resulting from in vitro fertilization treatment. J Assist Reprod Genet 2020; 37:1963-1974. [PMID: 32572673 DOI: 10.1007/s10815-020-01867-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/17/2020] [Indexed: 10/24/2022] Open
Abstract
PURPOSE To evaluate the effect of non-cavity-distorting intramural leiomyomas on the placental histopathology pattern and perinatal outcome in singleton live births resulting from in vitro fertilization treatment. METHODS The study population included all singleton live births following in vitro fertilization treatment with autologous oocytes during the period from 2009 to 2017. Primary outcomes included anatomical, inflammation, vascular malperfusion, and villous maturation placental features. Secondary outcomes included fetal, maternal, delivery, and perinatal complications. RESULTS A total of 1119 live births were included in the final analysis and were allocated to the group of pregnancies with non-cavity-distorting intramural myomas (n = 101) and without myomas (n = 1018). After the adjustment for confounding factors, the non-cavity-distorting intramural myomas were found to be significantly associated with assisted placental delivery (OR 2.4; 95% CI 1.5-3.9), furcate cord insertion (OR 3.6; 95% CI 1.4-9.3), circumvallate membranes insertion (OR 5.2; 95% CI 1.4-19.3), chronic deciduitis (OR 8.2; 95% CI 1.6-42.2), focal intramural fibrin deposition (OR 25.1; 95% CI 2.1-306.2), subchorionic thrombi (OR 3.6; 95% CI 1.7-7.6), maternal vasculopathy (OR 2.5; 95% CI 1.2-5.5), and chorangioma (OR 5.9; 95% CI 1.4-25.2) as well as with the failure of labor progress (OR 2.4; 95% CI 1.3-4.4) and induction (OR 3.2; 95% CI 1.2-9.0). CONCLUSION Intramural non-cavity-distorting myomas have a significant impact on the placental histopathology with a higher incidence of dysfunctional labor.
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Kim ML, Hong K, Kim S, Lee MJ, Shim SS, Hur YM, Shin JS. Twin pregnancies with uterine fibroids are not at increased risk for obstetric complications: single center cohort study. BMC Pregnancy Childbirth 2020; 20:222. [PMID: 32295544 PMCID: PMC7161148 DOI: 10.1186/s12884-020-02908-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 03/27/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Twin pregnancies with uterine fibroid(s) (UFs) may not be at increased risk for obstetric complications compared to those without UFs. However, there was no reported comparison study with obstetric outcomes and complications of twin pregnancy after myomectomy. We aimed to compare the pregnancy outcomes in twin pregnancies with or without uterine fibroid(s), and also compared in patients with previous myomectomy history in Korean women. METHODS A cohort of twin pregnancies delivered in a single institution between January 2011 and March 2019 were retrospectively analyzed. UFs group was defined by the presence of UFs during pregnancy (≥1 fibroid, measuring ≥2 cm or multiple fibroids regardless of the size). Previous myomectomy group included patients with history of abdominal or laparoscopic or hysteroscopic myomectomy of ≥1 fibroid, measuring ≥2 cm or multiple fibroids whatever the size. Patients with monochorionic monoamniotic twins, myoma less than 2 cm in size, missed abortion or intrauterine fetal death (IUFD) of one fetus before 14 weeks, history of previous conization, and uterine anomalies were excluded. Pregnancy outcomes and obstetric complications were compared. RESULT A total 1388 patients were included in this study, 191 (13.8%) had UFs and 89 (6.4%) had a history of myomectomy. Maternal age was younger in non-UFs group and primiparity was more common in UFs group (p < 0.001, and p = 0.019). No significant differences were found in the gestational age at delivery (p = 0.657), delivery before 37 weeks (p = 0.662), delivery before 34 weeks (p = 0.340), and sum of birth weight of twin (p = 0.307). There were also no statistical differences in rates of obstetrical complications, such as preeclampsia, gestational diabetes mellitus, placenta previa, placenta abruption, cerclage, small for gestational age, IUFD, postpartum hemorrhage and peripartum transfusion or ICU care. These obstetrical outcomes and complications showed no statistical differences between UFs group and previous myomectomy group. CONCLUSION In patients with twin pregnancies, the presence of UFs or history of previous myomectomy did not relate to negative effects on pregnancy outcomes and obstetrical complications.
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Affiliation(s)
- Mi-La Kim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul, 135-081, Republic of Korea
| | - Kirim Hong
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul, 135-081, Republic of Korea
| | - Sohyun Kim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul, 135-081, Republic of Korea
| | - Min Jin Lee
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul, 135-081, Republic of Korea
| | - Sung Shin Shim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul, 135-081, Republic of Korea
| | - Yoon-Mi Hur
- College of General Education, Kookmin University, Seoul, Republic of Korea
| | - Joong Sik Shin
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul, 135-081, Republic of Korea.
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