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Lebar V, Čelebić A, Calleja-Agius J, Jakimovska Stefanovska M, Drusany Staric K. Advancements in uterine sarcoma management: A review. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2025; 51:109646. [PMID: 40312227 DOI: 10.1016/j.ejso.2025.109646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2024] [Revised: 01/15/2025] [Accepted: 01/28/2025] [Indexed: 05/03/2025]
Abstract
Uterine sarcomas are rare, accounting for 3-7% of uterine malignancies. This review aims to summarize advancements in diagnostics and treatment over the last decade, focusing on innovative imaging techniques, molecular diagnostics, and treatment modalities. Recent diagnostic advancements include enhanced imaging techniques such as MRI and AI-driven algorithms, improving accuracy in differentiating between benign and malignant uterine tumors. Biomarkers like lactate dehydrogenase (LDH) and microRNAs have shown potential in preoperative identification. Treatment strategies continue to evolve, with surgical resection being the cornerstone. The role of lymphadenectomy and adnexectomy varies by histopathological subtype, emphasizing personalized approaches. Adjuvant therapies remain controversial, tailored to patient risk factors and tumor characteristics. Fertility-sparing options are viable for selected patients, though not recommended for high-grade tumors. Significant progress in diagnostic techniques and personalized treatment approaches has improved the management of uterine sarcomas. Future guidelines from major oncology groups are expected to standardize care. Continued research is essential for refining treatment protocols and enhancing patient outcomes.
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Affiliation(s)
- Vojka Lebar
- Department of Gynaecological Oncology, Institute of Oncology Ljubljana, Zaloška cesta 2, 1000, Ljubljana, Slovenia.
| | - Aleksandar Čelebić
- Institute of Oncology, Clinical Center of Montenegro, Ljubljanska bb, Podgorica, Montenegro; Medical School of University of Montenegro, Podgorica, Montenegro
| | - Jean Calleja-Agius
- Department of Anatomy, Faculty of Medicine and Surgery, University of Malta, Msida, MSD2080, Malta
| | - Marina Jakimovska Stefanovska
- Division of Gynaecology and Obstetrics, Department of Gynaecology University Medical Centre Ljubljana, Medical Faculty, Slovenia; University of Ljubljana, Zaloška cesta 7, 1000, Ljubljana, Slovenia
| | - Kristina Drusany Staric
- Division of Gynaecology and Obstetrics, Department of Gynaecology University Medical Centre Ljubljana, Medical Faculty, Slovenia; University of Ljubljana, Zaloška cesta 7, 1000, Ljubljana, Slovenia.
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Hu Y, Feng T. Recurrence complicated with peritoneal dissemination after single-port gasless myomectomy for cellular uterine leiomyoma: A case report and literature review. Medicine (Baltimore) 2024; 103:e37444. [PMID: 38489723 PMCID: PMC10939683 DOI: 10.1097/md.0000000000037444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/09/2024] [Indexed: 03/17/2024] Open
Abstract
RATIONALE Cellular uterine leiomyomas (CL) represent the prevailing subtype among uterine leiomyomas. In this study, we report a case of recurrent peritoneal disseminated uterine fibroids 2 years after single-port laparoscopic gasless myomectomy. This article endeavors to examine the potential limitations of the aforementioned surgical procedure and outline the distinguishing features of recurrent cases with primary postoperative pathology as CL. Additionally, it aims to provide a summary of previous retrospective studies on CL and propose the existence of immunohistochemical molecules that may serve as predictors for the postoperative recurrence of cellular uterine fibroids. The ultimate objective is to enhance clinicians' comprehension of the disease. PATIENT CONCERNS Two years ago, the patient underwent a single-port gasless laparoscopic myomectomy for uterine fibroids. Gynecological color Doppler ultrasound conducted 3 months ago revealed recurrence of uterine fibroids, and the patient experienced abdominal distension, mild urinary frequency, and constipation for the past month. DIAGNOSES After the second surgical procedure, a comprehensive pathological examination and immunohistochemical analysis of both the uterine mass and metastatic lesions revealed that the definitive diagnosis was CLs. INTERVENTIONS The patient underwent the total hysterectomy, bilateral salpingectomy, pelvic adhesiolysis, omental mass resection, mesenteric mass resection, and pelvic peritoneal mass resection. All specimens were sent for rapid frozen examination and showed to be leiomyomas. OUTCOMES The patient was discharged from the hospital on the 10th day after the operation. At the date of writing the article, the patient had no recurrence for 1 year and 5 months. LESSONS The single-port gasless approach did not achieve the desired reduction in fibroid recurrence, as anticipated by the surgeon. The act of pulling the tumor towards the abdominal incision for resection, on the contrary, may serve as an iatrogenic factor contributing to postoperative recurrence of CL into peritoneal dissemination leiomyomatosis. The single-port gasless assisted bag may be a more suitable option for myomectomy. The utmost effort should be made to prevent the potential recurrence of myoma caused by iatrogenic factors.
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Affiliation(s)
- Yuanyuan Hu
- Department of Graduate School, Hubei University of Medicine, Shiyan, China
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, China
| | - Tongfu Feng
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, China
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Zhao X, Liu Y, Shi Y, Niu J. In-bag extraction of tissue through an incision in the posterior vaginal wall in laparoscopic myomectomy: a large retrospective study. BMC Womens Health 2023; 23:631. [PMID: 38012692 PMCID: PMC10683316 DOI: 10.1186/s12905-023-02780-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 11/11/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Our purpose was to describe the outcomes of transvaginal in-bag tissue extraction tissue through an incision in the posterior vaginal wall the middle part incision of posterior vagina in laparoscopic myomectomy. METHODS This was a retrospective study of patients who received laparoscopic myomectomy and in-bag tissue extraction through an incision in the posterior vaginal wall between January 2016 and December 2022. Patient characteristics, intra- and post-operative complications, and outcomes were collected and analyzed. RESULTS A total of 511women were included in the analysis. The mean largest myoma diameter was 8.44 ± 3.56 cm; mean specimen weight was 789.23 ± 276.97 g; mean operative time was 129.01 ± 53.13minutes; and mean blood loss was 175.99 ± 210.96 mL. Within 30-days of surgery, no fever, infection, or vaginal bleeding was noted in any patient, and the vaginal incisions of all patients had healed well. There were no incisional hernias, pelvic infections, and vaginal adhesions noted at follow-up 3 months after the operation. There were 37 cases of vaginal delivery of the patients after surgery, and there were no lacerations of the posterior wall vaginal incision. CONCLUSIONS Transvaginal in-bag extraction though an incision in the posterior vaginal wall is feasible and safe for removing tissue after laparoscopic myomectomy.
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Affiliation(s)
- Xin Zhao
- Shenyang Women's and Children's Hospital, Shenyang, Liaoning Province, China
| | - Yansong Liu
- Shenyang Women's and Children's Hospital, Shenyang, Liaoning Province, China
| | - Yulin Shi
- Shenyang Women's and Children's Hospital, Shenyang, Liaoning Province, China
| | - Jumin Niu
- Shenyang Women's and Children's Hospital, Shenyang, Liaoning Province, China.
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Obrzut B, Kijowska M, Obrzut M, Mrozek A, Darmochwał-Kolarz D. Contained Power Morcellation in Laparoscopic Uterine Myoma Surgeries: A Brief Review. Healthcare (Basel) 2023; 11:2481. [PMID: 37761678 PMCID: PMC10531049 DOI: 10.3390/healthcare11182481] [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: 08/13/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Uterine fibromas are the most common benign uterine tumors. Although the majority of leiomyomas remain asymptomatic, they can cause serious clinical problems, including abnormal uterine bleeding, pelvic pain, and infertility, which require effective gynecological intervention. Depending on the symptoms as well as patients' preferences, various treatment options are available, such as medical therapy, non-invasive procedures, and surgical methods. Regardless of the extent of the surgery, the preferred option is the laparoscopic approach. To reduce the risk of spreading occult malignancy and myometrial cells associated with fragmentation of the specimen before its removal from the peritoneal cavity, special systems for laparoscopic contained morcellation have been developed. The aim of this review is to present the state-of-the-art contained morcellation. Different types of available retrieval bags are demonstrated. The advantages and difficulties associated with contained morcellation are described. The impact of retrieval bag usage on the course of surgery, as well as the effects of the learning curve, are discussed. The role of contained morcellation in the overall strategy to optimize patient safety is highlighted.
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Affiliation(s)
- Bogdan Obrzut
- Department of Obstetrics and Gynecology, Institute of Medical Sciences, Medical College, University of Rzeszów, Rejtana 16 C, 35-959 Rzeszow, Poland
| | - Marta Kijowska
- Department of Obstetrics and Gynecology, Provincial Clinical Hospital No. 2 Rzeszow, Lwowska 60, 35-301 Rzeszow, Poland
| | - Marzanna Obrzut
- Institute of Health Sciences, Medical College, University of Rzeszow, Warzywna 1a, 35-310 Rzeszow, Poland
| | - Adam Mrozek
- Department of Obstetrics and Gynecology, Institute of Medical Sciences, Medical College, University of Rzeszów, Rejtana 16 C, 35-959 Rzeszow, Poland
| | - Dorota Darmochwał-Kolarz
- Department of Obstetrics and Gynecology, Institute of Medical Sciences, Medical College, University of Rzeszów, Rejtana 16 C, 35-959 Rzeszow, Poland
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Giannini A, Golia D'Augè T, Bogani G, Laganà AS, Chiantera V, Vizza E, Muzii L, Di Donato V. Uterine sarcomas: A critical review of the literature. Eur J Obstet Gynecol Reprod Biol 2023; 287:166-170. [PMID: 37348383 DOI: 10.1016/j.ejogrb.2023.06.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/16/2023] [Accepted: 06/16/2023] [Indexed: 06/24/2023]
Abstract
This review aims to provide a comprehensive description of surgical approaches for the management of uterine sarcomas. Uterine sarcomas are rare uterine neoplasms. Frequently, diagnosis is made after hysterectomy or myomectomy scheduled for presumed benign leiomyomas. The gold standard for surgical treatment of uterine sarcomas is hysterectomy with bilateral salpingo-oophorectomy. It is possible to adopt a fertility-sparing approach for those patients who wish to maintain their fertility. The role of pelvic lymphadenectomy is controversial; in fact, removal of lymph nodes is only recommended in the case of radiological suspicion of nodal involvement. Use of a morcellator is associated with increased risk of total recurrence, intra-abdominal recurrence and death. Advanced disease management should be customized based on the patient's performance status given the uncertain role of adjuvant chemotherapy. Treatment of advanced or recurrent disease remains a subject of debate, but surgery is the best approach in terms of morbidity and mortality. There are few options for management of these uterine tumours, and further studies are needed to clarify the diagnostic and therapeutic pathways of patients with a first diagnosis of uterine sarcoma and patients with relapse of uterine sarcoma. No specific evidence supports the adoption of adjuvant therapy in uterine-confined disease, and molecular/genomic profiling may be useful to identify patients at risk of recurrence.
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Affiliation(s)
- Andrea Giannini
- Department of Medical and Surgical Sciences and Translational Medicine, PhD Course in 'Translational Medicine and Oncology', Sapienza University, Rome, Italy
| | - Tullio Golia D'Augè
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Policlinico Umberto I, Rome, Italy.
| | - Giorgio Bogani
- Department of Gynaecologic Oncology, IRCCS National Cancer Institute, Milan, Italy
| | - Antonio Simone Laganà
- Unit of Gynecologic Oncology, ARNAS 'Civico-Di Cristina-Benfratelli', Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy
| | - Vito Chiantera
- Unit of Gynecologic Oncology, ARNAS 'Civico-Di Cristina-Benfratelli', Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy
| | - Enrico Vizza
- Gynaecologic Oncology Unit, Department of Experimental Clinical Oncology, IRCCS-Regina Elena National Cancer Unit Institute, Rome, Italy
| | - Ludovico Muzii
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Policlinico Umberto I, Rome, Italy
| | - Violante Di Donato
- Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Policlinico Umberto I, Rome, Italy
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Yu H, Liang J, Liang H, Feng D, Ling B. Laparoscopically assisted ovarian cystectomy with totally enclosed protective device for tumor isolation. Int J Gynaecol Obstet 2023; 160:588-593. [PMID: 36114758 DOI: 10.1002/ijgo.14468] [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: 09/28/2021] [Revised: 03/10/2022] [Accepted: 08/09/2022] [Indexed: 01/20/2023]
Abstract
OBJECTIVE To present a novel totally enclosed protective device for tumor isolation in laparoscopic ovarian cystectomy. METHODS A retrospective study was conducted of 16 patients with unilateral ovarian teratoma in the Department of Obstetrics and Gynecology of the China-Japan Friendship Hospital. Laparoscopic surgery was performed with a totally enclosed protective device for tumor isolation, followed by a case series retrospective study. The indexes measured included size of cyst, rate of intraoperative rupture, duration of operation, amount of intraoperative blood loss, and postoperative length of stay in the hospital. An intact cyst resected in the device with no spillage seen indicated a successful surgery. RESULTS A total of 16 operations were performed successfully. The mean diameter of the cysts was 7.2 ± 1.4 cm. Of them, 12 (75%) had an intraoperative cyst rupture without spillage. The mean duration of surgery was 1.3 ± 0.1 h and the mean amount of intraoperative blood loss was 12.5 ± 3.2 ml. All postoperative histology tests showed benign cysts. The mean length of stay after surgery was 2.4 ± 0.5 days. No peritonitis-related symptoms or complaints were reported. CONCLUSION Laparoscopically assisted ovarian cystectomy with a totally enclosed protective device for tumor isolation was confirmed safe and feasible.
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Affiliation(s)
- Huan Yu
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Jing Liang
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Haiyan Liang
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Dingqing Feng
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Bin Ling
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
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Outcomes of In-bag Transvaginal Extraction in a Series of 692 Laparoscopic Myomectomies: Results from a Large Retrospective Analysis. J Minim Invasive Gynecol 2022; 29:1331-1338. [PMID: 36150421 DOI: 10.1016/j.jmig.2022.09.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 12/14/2022]
Abstract
STUDY OBJECTIVE Transvaginal extraction is a feasible method to remove surgical specimen. In this study, we aim to report our experience with in-bag transvaginal specimen retrieval after laparoscopic myomectomy over the past 15 years. DESIGN Single-center retrospective analysis. SETTING Academic hospital. PATIENTS Women who underwent laparoscopic myomectomy from January 2005 to April 2021. INTERVENTION Posterior colpotomy and in-bag transvaginal extraction of the surgical specimen. MEASUREMENTS AND MAIN RESULTS We collected and analyzed data about patients' characteristics, main indication for surgery, and intra- and postoperative (within 30 days) complications. RESULTS A total of 692 women underwent transvaginal specimen retrieval after laparoscopic myomectomy (mean largest myoma diameter: 6.64 ± 2.21 cm; mean specimen weight: 177 ± 140 g; mean operative time: 84.1 ± 37.1 minutes; mean blood loss: 195 ± 191 mL). Within 30-days, we reported the following colpotomy-related complications: a total of 4 cases (0.6%) of vaginal bleeding, 3 of which resolved spontaneously (1 case required readmission with new colporrhaphy under general anesthesia), and 2 cases (0.3%) of vaginal pain, with no underlying cause identified on physical examination and pelvic ultrasound. Specimen weight was positively correlated with longer operative time, intraoperative blood loss, and length of hospital stay. CONCLUSION Posterior colpotomy and in-bag transvaginal extraction can be considered a feasible option for retrieval of surgical specimens after laparoscopic myomectomy.
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Han L, Wan Q, Chen Y, Zheng A. Single-Port Laparoscopic Surgery for Adnexal Mass Removal During Pregnancy: The Initial Experience of a Single Institute. Front Med (Lausanne) 2022; 8:800180. [PMID: 35242767 PMCID: PMC8886140 DOI: 10.3389/fmed.2021.800180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/27/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Single-port laparoscopy has become a feasible and safe approach for the management of benign adnexal masses during pregnancy. To our knowledge, there are few reports on the feasibility and safety of single-port laparoscopy for adnexal mass removal during pregnancy. Our study reports the use of single-port laparoscopy in adnexal mass removal during pregnancy in our hospital. METHODS We included 10 cases of single-port laparoscopic surgery for adnexal mass removal during pregnancy in the West China Second University Hospital between January 2017 and March 2020. Median values were found using SPSS20. When the p-value was <0.05, the median and interquartile range were used. All patients provided informed consent. RESULTS The following median values were recorded: surgical time, 112.50 min; blood loss, 25 ml; postoperative hospital stay, 3 days; postoperative pain [visual analog scale (VAS)] at 6 h, 3; and postoperative pain (VAS) at 24 h, 2. Our study reported no postoperative spontaneous abortions. There was one preterm birth. CONCLUSION Single-port laparoscopy appears to be safe for both the mother and the fetus.
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Affiliation(s)
- Ling Han
- Department of Obstetrics and Gynecology, West China Second Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, China
| | - Qi Wan
- Department of Obstetrics and Gynecology, West China Second Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, China
| | - Yali Chen
- Department of Obstetrics and Gynecology, West China Second Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, China
| | - Ai Zheng
- Department of Obstetrics and Gynecology, West China Second Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, China
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Wang W, Liang H, Zhao F, Yu H, Rong C, Feng W, Chen Q, Yang Y, Li Q, Feng D, Dong Y, Xue M, Liang J, Ling B. A Novel Multi-Port Containment System for Laparoscopic Power Morcellation to Prevent Tumoral Spread: A Retrospective Cohort Study. Front Surg 2022; 9:803950. [PMID: 35187057 PMCID: PMC8850355 DOI: 10.3389/fsurg.2022.803950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/03/2022] [Indexed: 11/26/2022] Open
Abstract
Objective To report a novel multi-port containment (NMC) system for laparoscopic power morcellation to prevent tumoral spread and to evaluate its safety, validity, and feasibility. Methods This retrospective study included women who underwent laparoscopic myomectomy (LM) between January 2014 and August 2020 at a single academic institution. The NMC system was used in the study group (n = 193); the control group underwent unprotected LM (n = 1753). Results After 1:1 propensity score matching, no significant differences in the baseline characteristics were observed between 193 matched pairs. Bag damages were detected in two cases in the study group before morcellation, and the NMC systems were replaced. There were no significant differences between the two groups in terms of the complications, total operative time, estimated blood loss, or postoperative hospitalization duration. In the study group, all operations were completed and no system rupture or leakage was observed. The median follow-up times were 21 and 54 months in the study and control groups, respectively. There was no peritoneal tissue spread in the study group. However, three (3/5, 0.6%) and six (6/1,753, 0.3%) patients in the control group experienced malignant and benign peritoneal tissue spread, respectively. Conclusion The NMC system for laparoscopic power morcellation is valid, safe, and feasible for preventing a tumor spread.
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Affiliation(s)
- Wenhui Wang
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Haiyan Liang
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Fang Zhao
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Huan Yu
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Chunhong Rong
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Weiwei Feng
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
- Graduate School of Beijing University of Chinese Medicine, Beijing, China
| | - Qingyun Chen
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Yanjun Yang
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Qian Li
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Dingqing Feng
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Yuxiao Dong
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
- Graduate School of Beijing University of Chinese Medicine, Beijing, China
| | - Ming Xue
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
| | - Jing Liang
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
- *Correspondence: Jing Liang
| | - Bin Ling
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, China
- Graduate School of Beijing University of Chinese Medicine, Beijing, China
- Bin Ling
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