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Dinoi G, Ghoniem K, Huang Y, Zanfagnin V, Cucinella G, Langstraat C, Glaser G, Kumar A, Weaver A, McGree M, Fanfani F, Scambia G, Mariani A. Endometrial cancer with positive sentinel lymph nodes: pathologic characteristics of metastases as predictors of extent of lymphatic dissemination and prognosis. Int J Gynecol Cancer 2024; 34:1172-1182. [PMID: 38658020 DOI: 10.1136/ijgc-2023-005181] [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] [Indexed: 04/26/2024] Open
Abstract
OBJECTIVES To assess predictors of extensive lymph node dissemination and non-vaginal recurrence in patients with endometrial cancer with positive sentinel lymph nodes (SLNs). METHODS Patients with endometrial cancer who underwent primary surgery with SLN mapping and had at least one positive node between October 2013 and May 2019 were included. Positive SLNs were reviewed, and cases were classified according to the location of the metastasis (extracapsular vs intracapsular), and the size of the largest SLN metastasis (isolated tumor cells, micrometastasis, macrometastasis). Associations were assessed based on fitting logistic regression models and Cox proportional hazards models. RESULTS A total of 103 patients met the inclusion criteria: including 36 (34.9%) with isolated tumor cells, 27 (26.2%) with micrometastasis, and 40 (38.8%) with macrometastasis. Notably, 71.4% of patients exhibiting extracapsular SLN metastases had multiple positive SLNs (p=0.008). Extracapsular invasion (adjusted odds ratio (aOR) 5.81, 95% CI 1.4 to 23.6) and age (aOR=1.8, 95% CI 1.1 to 3.0) emerged as independent predictors of multiple positive SLNs. Among the 38 patients who underwent a backup pelvic lymphadenectomy, 18 (47.4%) presented with positive pelvic non-SLNs, a phenomenon more prevalent in patients with macrometastasis (p=0.004).Independent predictors of non-vaginal recurrence included SLN macrometastasis (adjusted hazard ratio (aHR) 3.3, 95% CI 1.3 to 8.3), non-endometrioid histology (aHR=3.7, 95% CI 1.5 to 9.3), and cervical stromal invasion (aHR=5.5, 95% CI 2.0 to 14.9). Among the 34 patients with isolated tumor cells and endometrioid histology, 3 (9%) experienced a recurrence, all of whom had not received any adjuvant chemotherapy or external beam radiotherapy. CONCLUSION Patients with positive SLN macrometastasis are independently associated with extensive lymphatic dissemination and distant recurrences. The risk of multiple positive SLNs increases with the extracapsular location of the SLN metastasis and with age. Independent uterine pathologic predictors of non-vaginal recurrence are non-endometrioid histology and cervical stromal invasion.
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Affiliation(s)
- Giorgia Dinoi
- Dipartimento Scienze della Salute della Donna e del Bambino, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
- Department of Obstetrics and Gynecology, Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Khaled Ghoniem
- Department of Obstetrics and Gynecology, Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Yajue Huang
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Valentina Zanfagnin
- Department of Obstetrics and Gynecology, Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Giuseppe Cucinella
- Department of Obstetrics and Gynecology, Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Carrie Langstraat
- Department of Obstetrics and Gynecology, Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Gretchen Glaser
- Department of Obstetrics and Gynecology, Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Amanika Kumar
- Department of Obstetrics and Gynecology, Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Amy Weaver
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota, USA
| | - Michaela McGree
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota, USA
| | - Francesco Fanfani
- Dipartimento Scienze della Salute della Donna e del Bambino, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
| | - Giovanni Scambia
- Dipartimento Scienze della Salute della Donna e del Bambino, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
| | - Andrea Mariani
- Department of Obstetrics and Gynecology, Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
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Pache B, Tantari M, Guani B, Mathevet P, Magaud L, Lecuru F, Balaya V. Predictors of Non-Sentinel Lymph Node Metastasis in Patients with Positive Sentinel Lymph Node in Early-Stage Cervical Cancer: A SENTICOL GROUP Study. Cancers (Basel) 2023; 15:4737. [PMID: 37835431 PMCID: PMC10571801 DOI: 10.3390/cancers15194737] [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: 09/04/2023] [Revised: 09/24/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND The goal of this study was to identify the risk factors for metastasis in the remaining non-sentinel lymph nodes (SLN) in the case of positive SLN in early-stage cervical cancer. METHODS An ancillary analysis of two prospective multicentric databases on SLN biopsy for cervical cancer (SENTICOL I and II) was performed. Patients with early-stage cervical cancer (FIGO 2018 IA to IIA1), with bilateral SLN detection and at least one positive SLN after ultrastaging, were included. RESULTS 405 patients were included in SENTICOL I and Il. Fifty-two patients had bilateral SLN detection and were found to have SLN metastasis. After pelvic lymphadenectomy, metastatic involvement of non-SLN was diagnosed in 7 patients (13.5%). Patients with metastatic non-SLN were older (51.9 vs. 40.8 years, p = 0.01), had more often lympho-vascular space invasion (LVSI) (85.7% vs. 35.6%, p = 0.03), and had more often parametrial involvement (42.9% vs. 6.7%, p = 0.003). Multivariate analysis retained age (OR = 1.16, 95% IC = [1.01-1.32], p = 0.03) and LVSI (OR = 25.97, 95% IC = [1.16-582.1], p = 0.04) as independently associated with non-SLN involvement. CONCLUSIONS Age and LVSI seemed to be predictive of non-SLN metastasis in patients with SLN metastasis in early-stage cervical cancer. Larger cohorts are needed to confirm the results and clinical usefulness of such findings.
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Affiliation(s)
- Basile Pache
- Department Women-Mother-Child, Gynecology and Obstetrics Unit, Lausanne University Hospital (CHUV), 1005 Lausanne, Switzerland
- University of Lausanne (UNIL), 1015 Lausanne, Switzerland
- Gynecology Department, Fribourg University Hospital, University of Fribourg, 1700 Fribourg, Switzerland
| | - Matteo Tantari
- Unit of Obstetrics and Gynecology, Ospedale Villa Scassi-ASL3, Metropolitan Area of Genoa, 16149 Genoa, Italy
| | - Benedetta Guani
- University of Lausanne (UNIL), 1015 Lausanne, Switzerland
- Gynecology Department, Fribourg University Hospital, University of Fribourg, 1700 Fribourg, Switzerland
| | - Patrice Mathevet
- Department Women-Mother-Child, Gynecology and Obstetrics Unit, Lausanne University Hospital (CHUV), 1005 Lausanne, Switzerland
- University of Lausanne (UNIL), 1015 Lausanne, Switzerland
| | - Laurent Magaud
- Clinical Research and Epidemiology Department, Public Health Center, Hospices Civils de Lyon, F-69003 Lyon, France
| | - Fabrice Lecuru
- Breast, Gynecology and Reconstructive Surgery Unit, Institut Curie, Paris University, F-75005 Paris, France
| | - Vincent Balaya
- Department of Obstetrics and Gynecology, Felix Guyon Hospital, University Hospital La Réunion, F-97490 Saint-Denis, France
- University of La Réunion, F-97744 Saint-Denis, France
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Otsuka I. Therapeutic Benefit of Systematic Lymphadenectomy in Node-Negative Uterine-Confined Endometrioid Endometrial Carcinoma: Omission of Adjuvant Therapy. Cancers (Basel) 2022; 14:cancers14184516. [PMID: 36139675 PMCID: PMC9497184 DOI: 10.3390/cancers14184516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/02/2022] [Accepted: 09/14/2022] [Indexed: 11/24/2022] Open
Abstract
Simple Summary Endometrial cancer is the most common gynecological tract malignancy in developed countries. Extrauterine disease, in particular lymph node metastasis, is an important prognostic factor. Nevertheless, pelvic lymphadenectomy is not considered to have a therapeutic benefit, as it did not improve survival in randomized studies. However, lymphadenectomy may have a therapeutic benefit if adjuvant therapy can be omitted without decreasing oncological outcomes, as the long-term quality of life is maintained by avoiding morbidities associated with adjuvant therapy. In intermediate- and high-risk endometrioid endometrial carcinomas, adjuvant therapy may be safely omitted without decreasing long-term survival by open surgery including systematic pelvic and para-aortic lymphadenectomy when patients are node-negative. Systematic lymphadenectomy may remove undetectable low-volume lymph node metastasis in both pelvic and para-aortic regions, and open surgery may reduce vaginal recurrence even without vaginal brachytherapy. However, lymphadenectomy may not improve survival in elderly patients and patients with p53-mutant tumors. Abstract Endometrial cancer is the most common gynecological tract malignancy in developed countries, and its incidence has been increasing globally with rising obesity rates and longer life expectancy. In endometrial cancer, extrauterine disease, in particular lymph node metastasis, is an important prognostic factor. Nevertheless, pelvic lymphadenectomy is not considered to have a therapeutic benefit, as it did not improve survival in randomized studies. However, lymphadenectomy may have a therapeutic benefit if adjuvant therapy can be omitted without decreasing oncological outcomes, as the long-term quality of life is maintained by avoiding morbidities associated with adjuvant therapy. In intermediate- and high-risk endometrioid endometrial carcinomas, adjuvant therapy may be safely omitted without decreasing long-term survival by open surgery including systematic pelvic and para-aortic lymphadenectomy when patients are node-negative. Systematic lymphadenectomy may remove undetectable low-volume lymph node metastasis in both pelvic and para-aortic regions, and open surgery may reduce vaginal recurrence even without vaginal brachytherapy. However, lymphadenectomy may not improve survival in elderly patients and patients with p53-mutant tumors. In this review, I discuss the characteristics of lymph node metastasis, the methods of lymph node assessment, and the therapeutic benefits of systematic lymphadenectomy in patients with intermediate- and high-risk endometrioid endometrial carcinoma.
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Affiliation(s)
- Isao Otsuka
- Department of Obstetrics and Gynecology, Kameda Medical Center, Kamogawa 296-8602, Chiba, Japan
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Indications for Adjuvant Radiotherapy in Patients with pN0(i+) Adenocarcinoma of the Endometrium. Pract Radiat Oncol 2022; 12:348-353. [DOI: 10.1016/j.prro.2022.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/10/2022] [Accepted: 01/10/2022] [Indexed: 11/15/2022]
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Zhai L, Zhang X, Cui M, Wang J. Sentinel Lymph Node Mapping in Endometrial Cancer: A Comprehensive Review. Front Oncol 2021; 11:701758. [PMID: 34268126 PMCID: PMC8276058 DOI: 10.3389/fonc.2021.701758] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 06/01/2021] [Indexed: 12/27/2022] Open
Abstract
Endometrial cancer (EC) is known as a common gynecological malignancy. The incidence rate is on the increase annually. Lymph node status plays a crucial role in evaluating the prognosis and selecting adjuvant therapy. Currently, the patients with high-risk (not comply with any of the following: (1) well-differentiated or moderately differentiated, pathological grade G1 or G2; (2) myometrial invasion< 1/2; (3) tumor diameter < 2 cm are commonly recommended for a systematic lymphadenectomy (LAD). However, conventional LAD shows high complication incidence and uncertain survival benefits. Sentinel lymph node (SLN) refers to the first lymph node that is passed by the lymphatic metastasis of the primary malignant tumor through the regional lymphatic drainage pathway and can indicate the involvement of lymph nodes across the drainage area. Mounting evidence has demonstrated a high detection rate (DR), sensitivity, and negative predictive value (NPV) in patients with early-stage lower risk EC using sentinel lymph node mapping (SLNM) with pathologic ultra-staging. Meanwhile, SLNM did not compromise the patient’s progression-free survival (PFS) and overall survival (OS) with low operative complications. However, the application of SLNM in early-stage high-risk EC patients remains controversial. As revealed by the recent studies, SLNM may also be feasible, effective, and safe in high-risk patients. This review aims at making a systematic description of the progress made in the application of SLNM in the treatment of EC and the relevant controversies, including the application of SLNM in high-risk patients.
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Affiliation(s)
- Lirong Zhai
- Department of Gynecology and Obstetrics, Peking University People's Hospital, Beijing, China
| | - Xiwen Zhang
- Department of Gynecology and Obstetrics, The Second Hospital of Jilin University, Changchun, China
| | - Manhua Cui
- Department of Gynecology and Obstetrics, The Second Hospital of Jilin University, Changchun, China
| | - Jianliu Wang
- Department of Gynecology and Obstetrics, Peking University People's Hospital, Beijing, China
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Taşkın S, Varlı B, Altın D, Takmaz Ö, Vatansever D, Ersöz CC, Turan H, Bulutay P, Zeren H, Havare SB, Karabük E, Naki M, Güngör M, Köse F, Ortaç F, Arvas M, Ayhan A, Taşkıran Ç. Comparison of two intraoperative examination methods for the diagnosis of sentinel lymph node metastasis in clinically early stage endometrial cancer: A Turkish Gynecologic Oncology Group Study (TRSGO-SLN-003). Eur J Obstet Gynecol Reprod Biol 2021; 261:72-77. [PMID: 33894621 DOI: 10.1016/j.ejogrb.2021.04.009] [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: 01/24/2021] [Revised: 03/31/2021] [Accepted: 04/09/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE This study evaluated diagnostic accuracy of intraoperative sentinel lymph node (SLN) frozen section examination and scrape cytology as a possible solution for management of SLN positive patients. STUDY DESIGN Clinically early-stage endometrial cancer patients who underwent SLN algorithm and intraoperative SLN examination were analyzed. Findings were compared with final pathology results and diagnostic accuracy of frozen section and scrape cytology were evaluated. RESULTS Of the 208 eligible patients, 100 patients (48 %) had frozen section examination and 108 (52 %) had scrape cytology of the SLN. Intraoperative examination and final pathology were negative for metastasis in 187/208 (90 %) cases. The rest 21 cases had metastatic SLNs according to final pathology. 12 of 21 (57 %) metastases were classified as macrometastasis. Intraoperative examination of SLNs correctly identified 13 cases (true positive) and missed 8 cases (false negative). Five of 8 false negative cases had micrometastasis or isolated tumor cells. Considering identification of macrometastasis, sensitivity and negative predictive value were 85.71 % and 98.94 %, respectively, for the frozen section and 60.00 % and 98.15 %, respectively, for the scrape cytology. CONCLUSION Frozen section examination of SLN has higher sensitivity in detecting macrometastasis compared to scrape cytology and it could help the surgeon in decision for further lymphadenectomy intraoperatively.
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Affiliation(s)
- Salih Taşkın
- Ankara University School of Medicine, Department of Gynecology and Obstetrics, Ankara, Turkey
| | - Bulut Varlı
- Ankara University School of Medicine, Department of Gynecology and Obstetrics, Ankara, Turkey.
| | - Duygu Altın
- Ankara University School of Medicine, Department of Gynecology and Obstetrics, Ankara, Turkey
| | - Özgüç Takmaz
- Acıbadem University School of Medicine, Department of Gynecology and Obstetrics, İstanbul, Turkey
| | - Doğan Vatansever
- Koç University School of Medicine, Department of Gynecology and Obstetrics, İstanbul, Turkey
| | | | - Hasan Turan
- University of Health Sciences, İstanbul Training and Research Hospital, Department of Gynecology and Obstetrics, İstanbul, Turkey
| | - Pınar Bulutay
- Koç University School of Medicine, Department of Pathology, İstanbul, Turkey
| | - Handan Zeren
- Acıbadem University School of Medicine, Department of Pathology, İstanbul, Turkey
| | - Semiha Battal Havare
- University of Health Sciences, İstanbul Training and Research Hospital, Department of Pathology, İstanbul, Turkey
| | - Emine Karabük
- Acıbadem University School of Medicine, Department of Gynecology and Obstetrics, İstanbul, Turkey
| | - Murat Naki
- Acıbadem University School of Medicine, Department of Gynecology and Obstetrics, İstanbul, Turkey
| | - Mete Güngör
- Acıbadem University School of Medicine, Department of Gynecology and Obstetrics, İstanbul, Turkey
| | - Faruk Köse
- Acıbadem University School of Medicine, Department of Gynecology and Obstetrics, İstanbul, Turkey
| | - Fırat Ortaç
- Ankara University School of Medicine, Department of Gynecology and Obstetrics, Ankara, Turkey
| | - Macit Arvas
- İstanbul University-Cerrahpaşa School of Medicine, Department of Gynecology and Obstetrics, İstanbul, Turkey
| | - Ali Ayhan
- Başkent University School of Medicine, Department of Gynecology and Obstetrics, Ankara, Turkey
| | - Çağatay Taşkıran
- Koç University School of Medicine, Department of Gynecology and Obstetrics, İstanbul, Turkey
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Diniz TP, Faloppa CC, Mantoan H, Gonçalves BT, Kumagai LY, Menezes ANO, Badiglian-Filho L, Guimaraes APG, da Costa AABA, De Brot L, Baiocchi G. Pathological factors associated with non-sentinel lymph node metastasis in early stage cervical cancer. J Surg Oncol 2021; 123:1115-1120. [PMID: 33524165 DOI: 10.1002/jso.26341] [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: 09/11/2020] [Revised: 11/16/2020] [Accepted: 11/30/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To analyze the predictive factors for non-sentinel lymph node (non-SLN) metastasis in early-stage cervical cancer. METHODS We analyzed a series of 113 patients who underwent sentinel lymph node (SLN) mapping for cervical cancer. The SLNs were examined by immunohistochemistry (IHC) when the hematoxylin-eosin stain was negative. RESULTS The overall bilateral detection rate was 81.5%, with a median of two SLNs resected. The study ultimately included 92 patients with SLNs that were mapped who had also undergone systematic pelvic lymph node dissection. Thirteen (14.1%) patients had positive SLNs, with a median of one positive SLN. Regarding the size of SLN metastasis, one (1.1%) had isolated tumor cells (ITC), seven (7.6%) had micrometastases, and five (5.4%) had macrometastases. Notably, 46.1% (6/13) had lymph node metastases detected only after IHC. Five (38.5%) cases had positive non-SLNs, with a median count of one positive lymph node. Parametrial invasion was the only risk factor for positive non-SLN (p = .045). Regarding the size of SLN metastasis, non-SLN involvement was present in the only case with ITC (1/1), 42.9% (3/7) of cases with micrometastases, and in 20% (1/5) with macrometastases. CONCLUSIONS Our data suggest that parametrial invasion correlates with the risk of non-SLN metastasis in cervical cancer.
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Affiliation(s)
- Thiago P Diniz
- Department of Gynecologic Oncology, AC Camargo Cancer Center, Sao Paulo, Brazil
| | - Carlos C Faloppa
- Department of Gynecologic Oncology, AC Camargo Cancer Center, Sao Paulo, Brazil
| | - Henrique Mantoan
- Department of Gynecologic Oncology, AC Camargo Cancer Center, Sao Paulo, Brazil
| | - Bruna T Gonçalves
- Department of Gynecologic Oncology, AC Camargo Cancer Center, Sao Paulo, Brazil
| | - Lillian Y Kumagai
- Department of Gynecologic Oncology, AC Camargo Cancer Center, Sao Paulo, Brazil
| | - Ademir N O Menezes
- Department of Gynecologic Oncology, AC Camargo Cancer Center, Sao Paulo, Brazil
| | | | | | | | - Louise De Brot
- Department of Anatomic Pathology, AC Camargo Cancer Center, Sao Paulo, Brazil
| | - Glauco Baiocchi
- Department of Gynecologic Oncology, AC Camargo Cancer Center, Sao Paulo, Brazil
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Altin D, Taskin S, Tokgozoglu N, Vatansever D, Guler AH, Gungor M, Tasci T, Turan H, Kahramanoglu I, Yalcin I, Celik C, Kose F, Ortac F, Arvas M, Ayhan A, Taskiran C. Can risk groups accurately predict non-sentinel lymph node metastasis in sentinel lymph node-positive endometrial cancer patients? A Turkish Gynecologic Oncology Group Study (TRSGO-SLN-004). J Surg Oncol 2020; 123:638-645. [PMID: 33259650 DOI: 10.1002/jso.26310] [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: 07/07/2020] [Revised: 10/11/2020] [Accepted: 11/02/2020] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND OBJECTIVES The purpose of this study was to find out the risk factors associated with non-sentinel lymph node metastasis and determine the incidence of non-sentinel lymph node metastasis according to risk groups in sentinel lymph node (SLN)-positive endometrial cancer patients. METHODS Patients who underwent at least bilateral pelvic lymphadenectomy after SLN mapping were retrospectively analyzed. Patients were categorized into low, intermediate, high-intermediate, and high-risk groups defined by ESMO-ESGO-ESTRO. RESULTS Out of 395 eligible patients, 42 patients had SLN metastasis and 16 (38.1%) of them also had non-SLN metastasis. Size of SLN metastasis was the only factor associated with non-SLN metastasis (p = .012) as 13/22 patients with macrometastasis, 2/10 with micrometastasis and 1/10 with isolated tumor cells (ITCs) had non-SLN metastasis. Although all 4 metastases (1.8%) among the low-risk group were limited to SLNs, the non-SLN involvement rate in the high-risk group was 42.9% and all of these were seen in patients with macrometastatic SLNs. CONCLUSIONS Non-SLN metastasis was more frequent in higher-risk groups and the risk of non-SLN metastasis increased with the size of SLN metastasis. Proceeding to complete lymphadenectomy when SLN is metastatic should further be studied as the effect of leaving metastatic non-SLNs in-situ is not known.
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Affiliation(s)
- Duygu Altin
- Ordu University Training and Teaching Hospital, Ordu, Turkey
| | - Salih Taskin
- Department of Gynecology and Obstetrics, Ankara University School of Medicine, Ankara, Turkey
| | | | - Dogan Vatansever
- Department of Gynecology and Obstetrics, Koç University School of Medicine, İstanbul, Turkey
| | - Adbul H Guler
- Department of Gynecology and Obstetrics, Selçuk University School of Medicine, Konya, Turkey
| | - Mete Gungor
- Department of Gynecology and Obstetrics, Acıbadem University School of Medicine, İstanbul, Turkey
| | - Tolga Tasci
- Bahçeşehir University Medical Park Göztepe Hospital, İstanbul, Turkey
| | - Hasan Turan
- İstanbul Training and Teaching Hospital, İstanbul, Turkey
| | - Ilker Kahramanoglu
- Diyarbakır Gazi Yaşargil Training and Teaching Hospital, Diyarbakır, Turkey
| | - Ibrahim Yalcin
- Department of Gynecology and Obstetrics, Şanlıurfa Training and Teaching Hospital, Şanlıurfa, Turkey
| | - Cetin Celik
- Department of Gynecology and Obstetrics, Selçuk University School of Medicine, Konya, Turkey
| | - Faruk Kose
- Department of Gynecology and Obstetrics, Acıbadem University School of Medicine, İstanbul, Turkey
| | - Firat Ortac
- Department of Gynecology and Obstetrics, Ankara University School of Medicine, Ankara, Turkey
| | - Macit Arvas
- Department of Gynecology and Obstetrics, Istanbul University - Cerrahpaşa School of Medicine, İstanbul, Turkey
| | - Ali Ayhan
- Department of Gynecology and Obstetrics, Başkent University School of Medicine, Ankara, Turkey
| | - Cagatay Taskiran
- Department of Gynecology and Obstetrics, Koç University School of Medicine, İstanbul, Turkey
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