{"title":"Cases of Retroverted Uterus Involving Placenta Previa and Low-Lying Placenta Previa Are Significantly Associated with Endometriosis.","authors":"Eika Harigane, Takashi Matsushima, Asako Watanabe, Hiroki Shinmura, Ryuhei Kurashina, Daisuke Shigemi, Shunji Suzuki","doi":"10.1272/jnms.JNMS.2025_92-106","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>The purpose of this study was to determine whether cases of placenta previa and low-lying placenta previa in patients with retroverted uterus are significantly associated with endometriosis.</p><p><strong>Methods: </strong>Participants were patients who underwent cesarean section at our hospital with a diagnosis of placenta previa or low-lying placenta previa within a 7-year period from January 2015 to December 2022. Of these, patients with multiple pregnancies and those without a complete uterine image in the medical record at less than 12 weeks' gestation were excluded. Included patients were divided into two groups according to the presence or absence of endometriosis. The presence of endometriosis was determined based on intraoperative findings. A retrospective case-control study was conducted by examining the presence or absence of retroverted uterus during early pregnancy and the presence or absence of posterior placenta.</p><p><strong>Results: </strong>A total of 110 patients were included, 32 in the group with endometriosis and 78 in the group without endometriosis. There were 15 (46.9%) cases of retroverted uterus in the group with endometriosis and 17 (21.8%) in the group without endometriosis, indicating significantly more cases in the group with endometriosis (P=0.01). There were 15 (46.9%) cases of retroverted uterus with posterior placenta in the group with endometriosis and 16 cases (20.5%) in the group without endometriosis, indicating significantly more cases in the group with endometriosis (P=0.009).</p><p><strong>Conclusion: </strong>Placenta previa and low-lying placenta previa in cases of retroverted uterus are significantly associated with endometriosis.</p>","PeriodicalId":56076,"journal":{"name":"Journal of Nippon Medical School","volume":"92 1","pages":"22-28"},"PeriodicalIF":1.2000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nippon Medical School","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1272/jnms.JNMS.2025_92-106","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MEDICINE, GENERAL & INTERNAL","Score":null,"Total":0}
引用次数: 0
Abstract
Background: The purpose of this study was to determine whether cases of placenta previa and low-lying placenta previa in patients with retroverted uterus are significantly associated with endometriosis.
Methods: Participants were patients who underwent cesarean section at our hospital with a diagnosis of placenta previa or low-lying placenta previa within a 7-year period from January 2015 to December 2022. Of these, patients with multiple pregnancies and those without a complete uterine image in the medical record at less than 12 weeks' gestation were excluded. Included patients were divided into two groups according to the presence or absence of endometriosis. The presence of endometriosis was determined based on intraoperative findings. A retrospective case-control study was conducted by examining the presence or absence of retroverted uterus during early pregnancy and the presence or absence of posterior placenta.
Results: A total of 110 patients were included, 32 in the group with endometriosis and 78 in the group without endometriosis. There were 15 (46.9%) cases of retroverted uterus in the group with endometriosis and 17 (21.8%) in the group without endometriosis, indicating significantly more cases in the group with endometriosis (P=0.01). There were 15 (46.9%) cases of retroverted uterus with posterior placenta in the group with endometriosis and 16 cases (20.5%) in the group without endometriosis, indicating significantly more cases in the group with endometriosis (P=0.009).
Conclusion: Placenta previa and low-lying placenta previa in cases of retroverted uterus are significantly associated with endometriosis.
期刊介绍:
The international effort to understand, treat and control disease involve clinicians and researchers from many medical and biological science disciplines. The Journal of Nippon Medical School (JNMS) is the official journal of the Medical Association of Nippon Medical School and is dedicated to furthering international exchange of medical science experience and opinion. It provides an international forum for researchers in the fields of bascic and clinical medicine to introduce, discuss and exchange thier novel achievements in biomedical science and a platform for the worldwide dissemination and steering of biomedical knowledge for the benefit of human health and welfare. Properly reasoned discussions disciplined by appropriate references to existing bodies of knowledge or aimed at motivating the creation of such knowledge is the aim of the journal.