IMR Press / CEOG / Volume 49 / Issue 2 / DOI: 10.31083/j.ceog4902043
Open Access Systematic Review
Rare extragenital endometriosis: pathogenesis and therapy
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1 Obstetrics and Gynecology Department, IRCCS San Raffaele Scientific Institute, 20123 Milan, Italy
2 Gynecology Department, IRCCS San Pio X Center, Humanitas University, 20159 Milan, Italy

Academic Editor: Jung-Ho Shin

Clin. Exp. Obstet. Gynecol. 2022, 49(2), 43; https://doi.org/10.31083/j.ceog4902043
Submitted: 15 July 2021 | Revised: 28 August 2021 | Accepted: 10 September 2021 | Published: 11 February 2022
(This article belongs to the Special Issue Endometriosis, Adenomyosis and Uterine Fibroids: Modern Management)
Copyright: © 2022 The Author(s). Published by IMR Press.
This is an open access article under the CC BY 4.0 license.
Abstract

Background: In the context of extragenital endometriosis, the gastrointestinal, urinary tract, abdominal wall, and thorax localizations are considered relatively frequent, while the umbilical, inguinal, sciatic nerve, liver, and pancreas are instead “rare”. Methods: Online searches were carried out in PubMed database of the last 20 years for these terms: extragenital endometriosis, umbilical endometriosis, inguinal endometriosis, sciatic nerve endometriosis, hepatic and pancreatic endometriosis. The following exclusion criteria were used: (1) Personal surgical history unspecified. (2) Nonspecific histological diagnosis for each type of endometriosis examined. (3) Inability to distinguish between the personal series of the author and the case reports described. (4) Proceedings of scientific meetings were not included. Tables that are easy to consult were compiled. Results: 810 titles were found among which 162 studies were selected for reading in full text and finally 114 papers were included, which met the objective of the revision. The so-called “rare” forms of extragenital endometriosis show an unsuspected frequency, an extreme variability of presentation, and uncertain treatment guidelines. Discussion: Gynecologists, general surgeons, and neurologists should be well acquainted with these pathologies to avoid confusing diagnostic paths and to set up adequate therapies.

Keywords
Extragenital
Umbilical
Inguinal
Sciatic nerve
Liver
Pancreatic endometriosis
Figures
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