Hidden danger: Atypical presentation of endometriosis in labor

Kendra McGrath, Sophie Lace, William Simmons, Vanitha Sivalingam, Laura Wilson
International Journal of Gynecology & Obstetrics · 2026 · doi:10.1002/ijgo.71027 · PMID:41988668
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This case report describes a rare instance of endometriosis presenting atypically during labor, highlighting the importance of considering this condition in unusual obstetric scenarios.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-09 · read from full text ⓘ

This paper reports an atypical presentation of endometriosis occurring during labor, described in a clinical case context with accompanying obstetric and perinatal pathology information. The authors focus on how endometriosis can manifest in a way that is not typical for pregnancy/labor and highlights associated diagnostic and clinical challenges rather than presenting new pooled analyses. The main limitation is that the report is case-based, so it cannot establish incidence or generalizable associations. This paper is centrally about endometriosis — specifically an atypical presentation of endometriosis in labor.

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Hidden danger: Atypical presentation of endometriosis in labor Corresponding Author Kendra McGrath Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Correspondence Kendra McGrath, Mersey and West Lancashire Teaching Hospitals NHS Trust, Warrington Road, Prescot, L35 5DR. Email: [email protected] Search for more papers by this authorSophie Lace Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Search for more papers by this authorWilliam Simmons Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Search for more papers by this authorVanitha Sivalingam Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Search for more papers by this authorLaura Wilson Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Search for more papers by this authorCorresponding Author Kendra McGrath Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Correspondence Kendra McGrath, Mersey and West Lancashire Teaching Hospitals NHS Trust, Warrington Road, Prescot, L35 5DR. Email: [email protected] Search for more papers by this authorSophie Lace Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Search for more papers by this authorWilliam Simmons Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Search for more papers by this authorVanitha Sivalingam Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Search for more papers by this authorLaura Wilson Obstetric Department, Liverpool Women's University Hospital, Liverpool, UK Paediatric and Perinatal Pathology Department, Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK Search for more papers by this authorCONFLICT OF INTEREST STATEMENT The authors have no conflict of interest. DATA AVAILABILITY STATEMENT Data sharing is not applicable to this article as no new data were created or analyzed in this study. REFERENCES - 1Tunn R, Ramakrishnan R, Engjom HM, Knight M. Incidence, outcomes and management of spontaneous haemoperitoneum in pregnancy: a UK population-based study. NIHR Open Res. 2025; 5: 40. doi:10.3310/nihropenres.13960.2 - 2Mamah JE, Otu RC, Okafor CC, Okafor CG. Spontaneous haemoperitoneum in pregnancy in women with endometriosis: diagnostic challenges and management strategies. SAGE Open Med. 2024; 12:20503121241243245. doi:10.1177/20503121241243245 - 3Zaytsev P, Taxy JB. Pregnancy-associated ectopic decidua. Am J Surg Pathol. 1987; 11(7): 526-530. - 4Rafi J, Mahindrakar G, Mukhopadhyay D. Endometriosis nodule causing spontaneous haemoperitoneum in pregnancy: a case report and literature review. Case Rep Obstet Gynecol. 2017; 2017:3480287. doi:10.1155/2017/3480287 - 5Rafi J, Pathiraja PDM, Gelson E, Brown R, Alleemudder D. Obstetric and perinatal outcomes in women with endometriosis. Obstet Gynaecol. 2022; 24: 242-250. 10.1111/tog.12831Google Scholar - 6Mehdiyev S, Tanoglu FB, Altuncu ED, Oral E. Spontaneous hemoperitoneum in a 29-week pregnancy with a history of endometriosis: a case report and review of the literature. Int J Gynaecol Obstet. 2025; 169: 31-37. doi:10.1002/ijgo.16006 - 7Mazzocco MI, Donati S, Maraschini A, et al. Spontaneous hemoperitoneum in pregnancy: Italian prospective population-based cohort study. Acta Obstet Gynecol Scand. 2022; 101(11): 1220-1226. - 8Schreurs AMF, Overtoom EM, de Boer MA, et al. Spontaneous haemoperitoneum in pregnancy: nationwide surveillance and Delphi audit system. BJOG. 2023; 130(13): 1620-1628. - 9Lier MCI, Malik RF, van Waesberghe JHTM, et al. Spontaneous haemoperitoneum in pregnancy and endometriosis: a case series. BJOG. 2017; 124: 306-312. 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endometriosis

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