Beyond the Mass Effect: Decoupling Endometrioma Size and Bilaterality from Ovarian Reserve Depletion

Johnny S. Younis, Younis JS, Edgardo Somigliana, Somigliana E
Journal of Minimally Invasive Gynecology · 2026 · doi:10.1016/j.jmig.2026.08.003 · PMID:42571844 · W7202037661
Other OA: closed public-domain-us
View on OpenAlex View on PubMed View at publisher
⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-08-12 ⓘ

This paper argues that endometrioma size and bilaterality do not reliably predict ovarian reserve depletion, proposing that disease-related biological processes, not just anatomical features, contribute to ovarian dysfunction.

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

Abstract

Ovarian endometriomas are commonly assessed according to cyst size and laterality, anatomical features that have long been regarded as indicators of disease severity and potential ovarian compromise. Consequently, these characteristics have influenced decisions regarding surveillance, fertility preservation, and surgical management. The traditional "mass effect" concept proposes that increasing cyst size and bilaterality are associated with progressively greater ovarian damage and depletion of ovarian reserve. However, accumulating clinical evidence suggests this relationship is more complex than previously appreciated. Recent studies and meta-analyses have failed to demonstrate consistent dose-response relationships between cyst diameter, bilaterality, and baseline ovarian reserve markers, indicating that these anatomical characteristics may not reliably reflect the biological extent of ovarian injury. By comparison, the association between surgical treatment and postoperative reduction in ovarian reserve has been more consistently demonstrated, highlighting the importance of distinguishing disease-related from treatment-related effects. These observations raise important questions regarding the mechanisms responsible for ovarian dysfunction in women with endometriomas. Experimental and histopathological studies implicate inflammation, oxidative stress, fibrosis, altered vascularization, iron-mediated toxicity, and microenvironmental remodeling as potential contributors to ovarian injury. Nevertheless, the available mechanistic evidence remains heterogeneous and is largely based on surrogate biological markers whose clinical relevance has yet to be established. We propose an integrated conceptual framework that interprets anatomical characteristics alongside the biological processes underlying ovarian injury to improve understanding of endometrioma-associated ovarian dysfunction and to support more individualized clinical decision-making. Future research should focus on identifying clinically meaningful biomarkers of ovarian microenvironmental damage and establishing their relationship with ovarian reserve, reproductive outcomes, and response to treatment. Until these mechanisms are better defined, management should integrate symptoms, reproductive goals, ovarian reserve assessment, and the anticipated benefits and risks of intervention rather than relying on cyst morphology alone.

My notes (saved in your browser only)

Citation neighborhood (2-hop)

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. Outer rings show 2-hop neighbours — papers reached through the immediate citers/citees. [ collapse to 1-hop ]

References (33)

Source provenance

europepmc
last seen: 2026-10-18T09:30:06.152893+00:00
openalex
last seen: 2026-10-19T06:08:44.544802+00:00
pubmed
last seen: 2026-10-19T06:10:42.286609+00:00
License: public-domain-us · commercial use OK · attribution required
Courtesy of the U.S. National Library of Medicine