O&G · Gynaecological surgery — endometriosis
Surgery for endometriosis: site-based excision, cystectomy and deep disease surgery
Also known as Laparoscopic excision of endometriosis · Endometrioma cystectomy · Deep infiltrating endometriosis surgery · DIE surgery · Nerve-sparing endometriosis surgery · ENZIAN classification · Segmental bowel resection endometriosis
Exam-exhaustive FRANZCOG fellowship topic on the surgical management of endometriosis: the indications for surgery, laparoscopy as the preferred route, the excision-vs-ablation evidence (equivalent for minimal-to-mild peritoneal disease; excision preferred for DIE and fibrotic nodules), the ENZIAN classification of deep infiltrating endometriosis (DIE) with compartments A/B/C/FA/FB/FU/FI and severity grades, the multidisciplinary approach to bowel/bladder/ureter disease (shaving, discoid, segmental), nerve-sparing surgery, the endometrioma and ovarian-reserve trade-off, the recurrence rate of 20-40% at 5 years, and the fertility-sparing surgical outcomes by the EFI. RANZCOG-primary (Australian Living Evidence), globally tagged to ESHRE 2022, MRCOG, ABOG, FRCSC and MRCPI.
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Target exams
Red flags
- Postmenopausal woman with an endometrioma — malignancy until proven otherwise; surgical assessment with oncology input, not surveillance
- Cyclical flank pain with hydronephrosis — ureteric DIE with silent obstructive uropathy risk; decompress before definitive resection
- Cyclical haematuria or mass-effect dyschezia with rectal bleeding — bladder or bowel DIE; image, map, and plan in an MDT
- Acute severe pain with a known endometrioma — possible rupture or torsion; emergency surgical assessment
- Bilateral endometrioma cystectomy in a fertility-seeking woman — counsel on AMH loss and consider oocyte/embryo cryopreservation pre-op
- Persistent pain after anatomically complete surgery — central sensitisation, adenomyosis, or adhesions; do not simply re-operate
A registrar calls you about a 32-year-old with cyclical dyschezia and a TVUS showing a rectosigmoid nodule. "Should I list her for a diagnostic lap?" No — you map her with MRI, score her with #ENZIAN, and convene a multidisciplinary meeting with colorectal surgery before any operation. Operating on DIE without mapping and an MDT is how bowel injuries and incomplete resections happen. Surgery in endometriosis is deliberate, planned, and fertility-aware — never exploratory.[1][4]
Overview and surgical indications
Endometriosis surgery covers peritoneal disease, ovarian endometrioma, and deep infiltrating endometriosis (DIE). The indications are narrow and examiners test them:[1]
- Refractory pain despite adequate medical therapy.
- Deep dyspareunia or chronic pelvic pain with DIE on imaging.
- Symptomatic endometrioma — pain, rupture, or suspicion of malignancy.
- Obstructive uropathy from ureteric DIE — urgent.
- Cyclical haematuria or rectal bleeding with bladder/bowel DIE.
- Infertility with EFI-relevant disease — surgery may improve fertility in selected cases.[1]
References12ShowHide
- [1]Becker CM, Bokor A, Heikinheimo O, et al. ESHRE guideline: endometriosis. Hum Reprod Open, 2022.PMID 35350465
- [2]Tuttlies F, Keckstein J, Ulrich U, et al. ENZIAN-score, a classification of deep infiltrating endometriosis. Zentralbl Gynakol, 2005.PMID 16195969
- [3]Hudelist G, Valentin L, Saridogan E, et al. What to choose and why to use - a critical review on the clinical relevance of rASRM, EFI and Enzian classifications of endometriosis. Facts Views Vis Obgyn, 2021.PMID 35026095
- [4]Maciel C, Ferreira H, Djokovic D, et al. MRI of endometriosis in correlation with the #Enzian classification: applicability and structured report. Insights Imaging, 2023.PMID 37405519
- [5]Burks C, Lee M, DeSarno M, et al. Excision versus Ablation for Management of Minimal to Mild Endometriosis: A Systematic Review and Meta-analysis. J Minim Invasive Gynecol, 2021.PMID 33310168
- [6]Quintairos RA, Brito LGO, Farah D, et al. Conservative versus Radical Surgery for Women with Deep Infiltrating Endometriosis: Systematic Review and Meta-analysis of Bowel Function. J Minim Invasive Gynecol, 2022.PMID 36184064
- [7]Choi S, Roviglione G, Chou D, et al. Nerve-sparing surgery in deep endometriosis: Has its time come? Best Pract Res Clin Obstet Gynaecol, 2024.PMID 38981835
- [8]Guo SW, Martin DC The perioperative period: a critical yet neglected time window for reducing the recurrence risk of endometriosis? Hum Reprod, 2019.PMID 31585460
- [9]Maheux-Lacroix S, Nesbitt-Hawes E, Deans R, et al. Endometriosis fertility index predicts live births following surgical resection of moderate and severe endometriosis. Hum Reprod, 2017.PMID 29040471
- [10]Adamson GD Endometriosis Fertility Index: is it better than the present staging systems? Curr Opin Obstet Gynecol, 2013.PMID 23571831
- [11]Nisenblat V, Bossuyt PM, Farquhar C, et al. Imaging modalities for the non-invasive diagnosis of endometriosis. Cochrane Database Syst Rev, 2016.PMID 26919512
- [12]Dunselman GA, Vermeulen N, Becker C, et al. ESHRE guideline: management of women with endometriosis. Hum Reprod, 2014.PMID 24435778