Left lateral predisposition of endometriosis and endometrioma

Haya Al-Fozan, Togas Tulandi
Obstetrics and gynecology · 2003 · vol. 101(1) , pp. 164–166 · doi:10.1016/s0029-7844(02)02446-8 · PMID:12517662 · W2019346755
article OA: closed CC0 ⤵ 66 in-corpus citations
View on OpenAlex View on PubMed View at publisher
⚙ AI-generated summary by claude@2026-06, 2026-06-06 ⓘ

Endometriosis and ovarian endometriomas were found to be significantly more frequent in the left hemipelvis and ovary, respectively, compared to the right.

One-sentence paraphrase of the abstract; not a substitute for reading it. No clinical advice. How this works

Abstract

To evaluate lateral distribution of endometriosis and ovarian endometrioma in women with endometriosis. We evaluated operative reports of women who underwent laparoscopic treatment of endometriosis (n = 330) and ovarian endometrioma (n = 185) from January 1996 to January 2002. Data on all operative findings consisted of a written report, a diagram, the revised American Fertility Society classification of endometriosis, and a printout of the dictated report. Endometriotic implants were confined to one side of the pelvis in 143 women and bilaterally in 187 others. Endometriosis was significantly more frequent in the left (64.3%) than in the right hemipelvis (P <.001, odds ratio 3.3, 95% confidence interval 2.0, 5.3). Of those with bilateral lesions, adhesions were also more frequently found on the left than on the right hemipelvis (16.6% versus 6.9%, P <.01, odds ratio 2.6, 95% confidence interval 1.3, 5.2). Endometrioma was found in the left ovary (n = 90), in the right ovary (n = 59), and bilaterally (n = 36). Left ovarian endometrioma was found more frequently (60.4%) than right endometrioma (P <.001, odds ratio 2.3, 95% confidence interval 1.5, 3.7). This trend was not related to the size of the endometrioma.Our results confirm a left lateral predisposition of endometriosis and ovarian endometrioma. It is possible that this is related to decreased fluid movement in the left side of the pelvis because of the presence of sigmoid colon. These findings may support the theory that the origin of endometriosis is from the regurgitated endometrial cells.

My notes (saved in your browser only)

Condition tags

endometriosisendometrioma

MeSH descriptors

Endometriosis Adult Endometriosis Female Humans Ovarian Diseases Ovarian Diseases Peritoneal Diseases Peritoneal Diseases Retrospective Studies

Citation neighborhood

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

References (13)

Cited by (50)

Source provenance

europepmc
last seen: 2026-06-11T06:19:48.454388+00:00
openalex
last seen: 2026-06-10T17:14:06.276822+00:00
pubmed
last seen: 2026-05-13T22:12:55.732728+00:00
License: CC0 · commercial use OK