How Distinct Endometriosis Macrophenotypes Reshape Care

Endometriosis remains a notoriously complex gynecological disorder that affects millions of women worldwide. Clinicians have long recognized its varied clinical presentations. However, researchers are now actively uncovering the distinct biological characteristics of different endometriosis lesion macrophenotypes. A pivotal pooled analysis from the What is Endometriosis (WisE) study sheds new light on this clinical heterogeneity.

Understanding Endometriosis Lesion Macrophenotypes in Clinical Practice

The WisE study evaluated 1,244 surgically confirmed endometriosis cases alongside 1,271 controls across North America and Europe. Consequently, the investigators examined three primary macroscopic subtypes: superficial peritoneal endometriosis, ovarian endometriomas, and deep infiltrating lesions. Among the surgically confirmed cases, 71% presented with superficial peritoneal disease alone. In contrast, 8% exhibited endometriomas only, 11% presented with deep lesions alone, and 10% had both deep lesions and endometriomas. Therefore, these classifications demonstrate that superficial peritoneal disease represents the vast majority of surgical diagnoses in women's health and advanced clinical training.

Distinct Risk Profiles and Comorbidity Patterns

The findings revealed that individual risk factors vary significantly across macroscopic presentations. For example, early menarche at or before age 11 strongly increased the odds of superficial peritoneal endometriosis. Similarly, early menarche increased the risk of concurrent deep disease and endometriomas. However, early menarche showed no significant association with isolated endometriomas or isolated deep lesions. Furthermore, chronic overlapping pain conditions showed striking phenotypic specificity. Patients with overlapping pain syndromes had markedly higher odds of superficial peritoneal disease and deep endometriosis. Interestingly, this association did not extend to patients with endometriomas.

Clinical Implications for Gynecological Care

These findings strongly support the hypothesis that distinct macroscopic lesions arise from unique etiological mechanisms. Thus, treating endometriosis as a single uniform entity may obscure crucial clinical nuances. Clinicians should evaluate chronic pain comorbidities during routine pelvic pain assessments. Moreover, future diagnostic biomarkers and clinical trials must account for phenotypic variation. Tailoring medical management to specific subtypes will improve therapeutic outcomes for patients undergoing specialized urogynaecology and pelvic care.

Frequently Asked Questions

Q1: What are the three primary endometriosis lesion macrophenotypes?

The three main macrophenotypes include superficial peritoneal endometriosis, ovarian endometriomas, and deep infiltrating lesions.

Q2: How does early menarche impact different endometriosis subtypes?

Early menarche significantly increases the odds of superficial peritoneal disease and combined deep lesions with endometriomas, but not isolated endometriomas.

Q3: Why are chronic overlapping pain conditions clinically important in endometriosis?

Chronic pain conditions correlate strongly with superficial peritoneal and deep endometriosis, suggesting shared systemic or neuropathic mechanisms in these specific subtypes.

References

1. Sasamoto N et al. Endometriosis risk factors and comorbidities by endometriosis lesion macrophenotypes: An analysis from the What is Endometriosis (WisE) study. Am J Obstet Gynecol. 2026 Aug 25. doi: undefined. PMID: 42641934.
2. Nisolle M, Donnez J. Peritoneal endometriosis, ovarian endometriosis, and adenomyotic nodules of the rectovaginal septum are three different entities. Fertil Steril. 1997;68(4):585-596.
3. Lagana AS, Garzon S, Gotte M, et al. The Pathogenesis of Endometriosis: Molecular and Cell Biology Insights. Int J Mol Sci. 2019;20(22):5615.