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Introduction <p>Endometriomas are common in endometriosis and may coexist with deep pelvic disease. This study aimed to assess the association between endometrioma size and other endometriosis localizations using the #ENZIAN classification.</p> Study design <p>This multicenter study included women who underwent laparoscopic surgery for endometriomas between 2021 and 2024, with available surgical reports defining the #ENZIAN classification. Endometriomas were categorized as O1/2 (&lt; 7 cm) or O3 (≥ 7 cm). Other endometriosis localizations were compared between the study groups.</p> Results <p>A total of 269 women underwent surgery for endometriosis involving endometriomas. Of these, 42 had #ENZIAN O3 endometriomas, with a significantly higher rate of unilateral cysts compared to women with #ENZIAN O1/2 (92.8% vs. 68.2%, p = 0.0011). After excluding bilateral cases, 194 women with unilateral endometriomas were analyzed: 39 with #ENZIAN O3 and 155 with #ENZIAN O1/2. Women with O3 lesions were significantly younger (31.5 ± 5.9 vs. 34.5 ± 6.6 years; p = 0.011). The rate of adenomyosis (#ENZIAN F-A) was significantly lower in the O3 group (41% vs. 69%, p = 0.0012), as was rectal involvement (#ENZIAN C; 7.7% vs. 23.8%, p = 0.025). The prevalence of severe pelvic wall disease (T/B ≥ 2) did not differ significantly between groups.</p> Conclusion <p>Smaller endometriomas (O1/2) are associated with more extensive pelvic disease, including higher rates of adenomyosis, rectal involvement, and pelvic adhesions, whereas larger endometriomas (O3) may represent a more localized disease phenotype. These findings support the use of the #ENZIAN classification for more accurate preoperative assessment and individualized surgical planning.</p>

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The assessment of association between endometrioma size and other endometriosis compartments according to #ENZIAN classification

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月13日

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  • Elvin Piriyev,
  • Ahmet Namazov,
  • Islam Mahalov,
  • Flora Huseynova,
  • Gad Liberty,
  • Ofer Gemer,
  • Sven Schiermeier,
  • Thomas Römer,
  • Jörg Keckstein

摘要

Introduction

Endometriomas are common in endometriosis and may coexist with deep pelvic disease. This study aimed to assess the association between endometrioma size and other endometriosis localizations using the #ENZIAN classification.

Study design

This multicenter study included women who underwent laparoscopic surgery for endometriomas between 2021 and 2024, with available surgical reports defining the #ENZIAN classification. Endometriomas were categorized as O1/2 (< 7 cm) or O3 (≥ 7 cm). Other endometriosis localizations were compared between the study groups.

Results

A total of 269 women underwent surgery for endometriosis involving endometriomas. Of these, 42 had #ENZIAN O3 endometriomas, with a significantly higher rate of unilateral cysts compared to women with #ENZIAN O1/2 (92.8% vs. 68.2%, p = 0.0011). After excluding bilateral cases, 194 women with unilateral endometriomas were analyzed: 39 with #ENZIAN O3 and 155 with #ENZIAN O1/2. Women with O3 lesions were significantly younger (31.5 ± 5.9 vs. 34.5 ± 6.6 years; p = 0.011). The rate of adenomyosis (#ENZIAN F-A) was significantly lower in the O3 group (41% vs. 69%, p = 0.0012), as was rectal involvement (#ENZIAN C; 7.7% vs. 23.8%, p = 0.025). The prevalence of severe pelvic wall disease (T/B ≥ 2) did not differ significantly between groups.

Conclusion

Smaller endometriomas (O1/2) are associated with more extensive pelvic disease, including higher rates of adenomyosis, rectal involvement, and pelvic adhesions, whereas larger endometriomas (O3) may represent a more localized disease phenotype. These findings support the use of the #ENZIAN classification for more accurate preoperative assessment and individualized surgical planning.