{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T02:34:09Z","timestamp":1776911649966,"version":"3.51.2"},"reference-count":7,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2025,11,17]],"date-time":"2025-11-17T00:00:00Z","timestamp":1763337600000},"content-version":"vor","delay-in-days":16,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Patients with endometriosis are at a high risk of developing pelvic inflammatory disease. This case series presents three cases of colo\u2010ovarian fistulas associated with endometriosis, highlighting the potential for conservative management in selected cases. Case 1 involved a 36\u2010year\u2010old woman in whom suspected communication between the colon and an endometriotic cyst was noted on computed tomography and magnetic resonance imaging (MRI). Case 2 involved a 42\u2010year\u2010old woman who presented with a colo\u2010ovarian fistula on MRI. Case 3 involved another 42\u2010year\u2010old woman with a sigmoid colon perforation who was retrospectively diagnosed with a colo\u2010ovarian fistula. All cases were associated with endometriosis. In Cases 1 and 2, symptoms were successfully managed conservatively. In Case 3, the colo\u2010ovarian fistula only became apparent following hysterectomy and was treated by surgery. Although surgical intervention is commonly performed for colo\u2010ovarian fistulas, our findings suggest that conservative treatment may be an option in select cases with endometriosis\u2010associated fistulas.<\/jats:p>","DOI":"10.1111\/jog.70140","type":"journal-article","created":{"date-parts":[[2025,11,18]],"date-time":"2025-11-18T05:48:51Z","timestamp":1763444931000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Colo\u2010Ovarian Fistula With a Background of Endometriosis: A Report of Three Cases"],"prefix":"10.1111","volume":"51","author":[{"given":"Sayuri","family":"Fukaya","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology The University of Tokyo Hospital  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4546-1084","authenticated-orcid":false,"given":"Gentaro","family":"Izumi","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology The University of Tokyo Hospital  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5057-4120","authenticated-orcid":false,"given":"Kaori","family":"Koga","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Reproductive Medicine, Graduate School of Medicine Chiba University  Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuko","family":"Sanada","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology The University of Tokyo Hospital  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0241-9780","authenticated-orcid":false,"given":"Yasushi","family":"Hirota","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology The University of Tokyo Hospital  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6660-1066","authenticated-orcid":false,"given":"Yutaka","family":"Osuga","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology The University of Tokyo Hospital  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,11,17]]},"reference":[{"key":"e_1_2_11_2_1","first-page":"209","article-title":"Infection as a Potential Cofactor in the Genetic\u2010Epigenetic Pathophysiology of Endometriosis: A Systematic Review","volume":"11","author":"Koninckx P. R.","year":"2019","journal-title":"Facts, Views and Vision in ObGyn"},{"key":"e_1_2_11_3_1","first-page":"73","article-title":"Association Between Pelvic Inflammatory Disease and Risk of Endometriosis: A Systematic Review and Meta\u2010Analysis","volume":"33","author":"Ye H.","year":"2024","journal-title":"Journal of Women's Health (2002)"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/jog.13559"},{"key":"e_1_2_11_5_1","first-page":"1","article-title":"Similarities in Pathogenetic Mechanisms Underlying the Bidirectional Relationship Between Endometriosis and Pelvic Inflammatory Disease","volume":"13","author":"Kobayashi H.","year":"2023","journal-title":"Diagnostics (Basel, Switzerland)"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1093\/jscr\/rjx228"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1093\/jscr\/rjad525"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijscr.2020.10.144"}],"container-title":["Journal of Obstetrics and Gynaecology Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jog.70140","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,11,26]],"date-time":"2025-11-26T06:01:47Z","timestamp":1764136907000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1111\/jog.70140"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,11]]},"references-count":7,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2025,11]]}},"alternative-id":["10.1111\/jog.70140"],"URL":"https:\/\/doi.org\/10.1111\/jog.70140","archive":["Portico"],"relation":{},"ISSN":["1341-8076","1447-0756"],"issn-type":[{"value":"1341-8076","type":"print"},{"value":"1447-0756","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,11]]},"assertion":[{"value":"2024-12-11","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-11-04","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-11-17","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70140"}}