Is high-intensity focused ultrasound a magical solution to endometriosis? A systematic review

Background

Endometriosis presents a significant challenge in gynecological endocrinology, affecting approximately 1 in 10 women of reproductive age. Abdominal wall endometriosis (AWE) and rectosigmoid deep infiltrating endometriosis (DIE) pose unique clinical complexities. High-intensity focused ultrasound (HIFU) has emerged as a novel alternative for treating these conditions, offering a noninvasive option with potential therapeutic benefits.

Methods

A systematic review was conducted following PRISMA guidelines to investigate the safety and efficacy of HIFU therapy for AWE and rectosigmoid DIE. The literature search encompassed databases from inception to January 20, 2024. Eligible studies included observational studies, case reports, and clinical trials evaluating HIFU treatment for endometriosis. Data extraction and risk of bias assessment were performed following established protocols.

Results

Fourteen studies were included, comprising 330 patients with AWE and 28 patients with rectosigmoid DIE. HIFU treatment demonstrated significant efficacy, with many patients experiencing complete remission, and clinical effectiveness. Reductions in lesion volume posttreatment were consistent across studies. However, safety concerns were noted, including pain at the treatment site, hematuria, and skin burns. Adverse effects underscored the importance of careful patient selection and monitoring during HIFU therapy.

Conclusion

HIFU therapy shows promise as a noninvasive approach for managing AWE and rectosigmoid DIE. While efficacy outcomes are encouraging, safety considerations warrant attention. Further research, particularly randomized controlled trials with larger sample sizes, is needed to validate findings and optimize treatment protocols.

A comparison of the clinical and histological appearances after treatment of advanced stage ovarian cancer with PlasmaJet® device

OBJECTIVE

To compare the clinical appearance of "no residual disease" to the histological assessment of the same tissue when treated with PlasmaJet®. To determine if the treated tissue with a clinical appearance of "no residual disease" demonstrated histologically apparent damage to underlying structures.

AIM

The main aims of the study were to compare the clinical appearance of 'no residual disease' to the histological assessment of the same tissue and to assess whether treatment with PlasmaJet® to produce a clinical appearance of 'no residual disease' causes no histologically apparent damage to the underlying structures.

METHOD

This prospective cohort study was conducted in Liverpool Women's NHS Foundation Trust between January 2019 and June 2020. Women with a diagnosis of advanced or presumed advanced stage ovarian cancer were approached and 20 women were recruited into the study. Tissue samples were collected from women with stage 3 or 4 ovarian cancer at either primary or interval debulking surgery.

RESULTS

The clinical appearance of no residual disease was confirmed histologically in 84 % (n = 16) of cases. Fat was the only underlying tissue seen damaged in 21 % (n = 4) of cases. Bowel resection with stoma formation was needed in one case (5.26 %).

CONCLUSION

PlasmaJet® ablated the malignant tissue in majority of the cases without causing any significant damage to the underlying tissue, it also reduced the need for stoma formation. This is a small study with encouraging results. PlasmaJet® could be a valuable tool in ovarian cancer surgery, it potentially could reduce the need for bowel surgery and allow treatment of significant mesenteric disease with reduced morbidity for the patient.

Surgical treatment of deep endometriosis: Impact on spontaneous conception

Deep endometriosis (DE) is the most severe form of endometriosis and is commonly associated with infertility. Surgical treatment of DE appears to increase chances of spontaneous conception in appropriately selected patients wishing to conceive. Identifying, however, the exact impact of DE, and its surgical removal, on natural conception is highly challenging. The surgical approach should be favoured in symptomatic patients with pregnancy intention. Limited data from infertile patients suggest that outcomes may not differ from patients without known infertility. Complex DE surgery carries a risk of serious complications, therefore, it should be performed in centers of expertise. Such complications may, however, not have a significant negative impact on fertility outcomes, according to limited available data. Data on obstetric outcomes of spontaneous conceptions after DE surgery are too scarce. In asymptomatic, infertile patients the debate between primary surgery or Artifial Reproductive Technology is ongoing, until randomized studies report their results.

Surgical Management of Ovarian Endometrioma: Impact on Ovarian Reserve Parameters and Reproductive Outcomes

Ovarian endometriomas have a negative impact on a patient's reproductive potential and are likely to cause a reduction in ovarian reserve. The most commonly employed ovarian reserve parameters are anti-Müllerian hormone (AMH) and antral follicular count (AFC). Surgical management options of endometrioma include cystectomy, ablative methods, ethanol sclerotherapy and combined techniques. The optimal surgical approach remains a matter of debate. Our review aimed to summarize the literature on the impact of surgical management of endometrioma on AMH, AFC and fertility outcomes. Cystectomy may reduce recurrence rates and increase chances of spontaneous conception. However, a postoperative reduction in AMH is to be anticipated, despite there being evidence of recovery during follow-up. The reduction in ovarian reserve is likely multi-factorial. Cystectomy does not appear to significantly reduce, and may even increase, AFC. Ablative methods achieve an ovarian-tissue-sparing effect, and improved ovarian reserve, compared to cystectomy, has been demonstrated. A single study reported on AMH and AFC post sclerotherapy, and both were significantly reduced. AMH levels may be useful in predicting the chances of conception postoperatively. None of the aforementioned approaches has a clearly demonstrated superiority in terms of overall chances of conception. Surgical management of endometrioma may, overall, improve the probability of pregnancy. Evidence on its value before medically assisted reproduction (MAR) is conflicting; however, a combination of surgery followed by MAR may achieve the optimal fertility outcome. In view of the complexity of available evidence, individualization of care, combined with optimal surgical technique, is highly recommended.

Fertility Outcomes after Surgical Management of Colorectal Endometriosis: A Single-center Retrospective Study

STUDY OBJECTIVE

To assess the pregnancy rate after surgery for colorectal endometriosis.

DESIGN

A retrospective, single-center study performed from January 2014 to December 2019.

SETTING

A university tertiary referral center.

PATIENTS

Patients with the intention to get pregnant younger than the age of 43 years, with or without a history of infertility and who were surgically managed for colorectal endometriosis.

INTERVENTIONS

Complete excision of deeply infiltrating endometriosis.

MEASUREMENTS AND MAIN RESULTS

The postoperative pregnancy rate was assessed. Seventy-seven patients had surgery; their mean age was 32.5 ± 4.4 years. Preoperative documented infertility was present in 77.9% of patients (n = 60). The mean length of history of infertility was 36.2 ± 24.9 months. The procedure was performed by laparoscopic surgery in 92.2% of patients (n = 71). Nonconservative, conservative, and mixed treatment were performed in 66.2% (n = 51), 29.9% (n = 23), and 3.9% of patients (n = 3), respectively. According to the Clavien-Dindo classification, the 3B complication rate was 6.5% (n = 5). The mean follow-up was 46.7 ± 20.6 months. Clinical pregnancies were defined by the presence of intrauterine pregnancy with an embryo with cardiac activity. The postoperative pregnancy rate was 62.3% (n = 48), and 54.2% (n = 26) were spontaneous. The mean number of pregnancies was 1.2 ± 0.4 per patient. In addition, 18.7% of patients (n = 9) got pregnant twice. The mean time from surgery to pregnancy was 13.8 ± 13.1 months. The live birth rate was 89.1% (n = 41). There were no significant differences concerning the prognostic criteria reported in the literature (antimüllerian hormone level, age, presence of adenomyosis). There were no predictive criteria for live births.

CONCLUSION

According to this study, surgery for colorectal endometriosis results in a high postoperative pregnancy rate. Studies with a high level of evidence are needed to determine good candidates for this type of surgery.

Pregnancy rate following endometriomas management by ablation using plasma energy, cystectomy and drainage: A three-arm comparative study

OBJECTIVE

To compare differences in the postoperative pregnancy rate in women seeking to conceive and presenting with endometriomas larger than 3 cm in diameter, which were managed by ablation using plasma energy, cystectomy, or simple drainage.

METHODS

A retrospective three-arm comparative study based on prospective collection of data evaluating 363 patients, undergoing endometrioma cystectomy, ablation using plasma energy, or simple drainage.

RESULTS

In this series, 204 (56.2%) patients underwent endometrioma ablation using plasma energy, 121 (33.3%) received cystectomy, and 38 (10.5%) had a simple drainage. Postoperative follow up was 50 ± 26 months. Overall postoperative pregnancy rate was 60.3%. The probability of being pregnant after cystectomy, ablation, and drainage was respectively 27%, 32%, and 16% at 12 months, with a statistically significant difference between pregnancy rates among the three arms (P = 0.015). Simple drainage was associated with a probability of conception over 50% after 2 years, mainly based on postoperative assisted reproductive technology.

CONCLUSIONS

We reveal good postoperative pregnancy rate after ablation using plasma energy or cystectomy for endometriomas. Surgical management should be carefully considered in women with endometriomas and pregnancy intention, because the postoperative pregnancy rate may be compared with that observed after first-line assisted reproductive technology management.

Endometriosis and Infertility: A Long-Life Approach to Preserve Reproductive Integrity

Laparoscopic surgery was originally considered the gold standard in the treatment of endometriosis-related infertility. Assisted reproductive technology (ART) was indicated as second-line treatment or in the case of male factor. The combined approach of surgery followed by ART proved to offer higher chances of pregnancy in infertile women with endometriosis. However, it was highlighted how pelvic surgery for endometriosis, especially in cases of ovarian endometriomas, could cause iatrogenic damage due to ovarian reserve loss, adhesion formation (scarring), and ischemic damage. Furthermore, in the last few years, the trend to delay the first childbirth, recent technological advances in ultrasound diagnosis, and technological progress in clinical and laboratory aspects of ART have certainly influenced the approach to infertility and endometriosis with, ART assuming a more relevant role. Management of endometriosis should take into account that the disease is chronic and involves the reproductive system. Consequently, treatment and counselling should aim to preserve the chances of pregnancy for the patient, even if it is not associated with infertility. This review will analyse the evolution of the management of infertility associated with endometriosis and propose an algorithm for treatment decision-making based on the most recent acquisitions.

Association of Preoperative Enzian Score with Postoperative Fertility in Patients with Deep Pelvic Endometriosis

INTRODUCTION

Endometriosis is a chronic inflammatory disease with a negative impact on fertility. The Enzian classification provides a precise description of deep pelvic endometriotic lesions, especially in the retroperitoneal area, from preoperative pelvic MRI scans. However, it is not known if it is correlated with postoperative fertility.

STUDY OBJECTIVE

To determine if there is an association between the preoperative Enzian score and postoperative fertility after deep pelvic endometriosis surgery.

DESIGN

We conducted a descriptive, retrospective study using information from the ENDOREN database.

SETTING

This was a retrospective study at the Department of Obstetrics and Gynecology at Rennes University Hospital (France) from January 2013 to May 2019 PATIENTS AND INTERVENTIONS: We used information from the ENDOREN database that included all women who underwent surgery for deep endometriosis and wish to conceive. This surgery was intended in a view to achieve a complete removal of endometriosis.

MEASUREMENTS

The Enzian score was calculated from preoperative MRI scans, and total, spontaneous, and after In Vitro Fertilization (IVF) live births and pregnancies outcomes were collected from the patients'computerized medical records. Univariate and multivariate analysis was performed.

RESULTS

Sixty-eight patients were included. The live-birth rate was 35% (24/68). According to the Enzian classification, 25 patients (35%) were classified in compartment A, 64 patients (94%) in compartment B, and 27 (40%) in compartment C. In multivariate analysis, positive predictor of live birth was single Enzian B score (OR=4.7[1.21; 18.81], p=0.03), negative predictors were uterine adenomyosis and a history of endometriosis surgery. In multivariate analysis, positive predictor of spontaneous live birth was EFI score ≥7 (OR =22.434; CI [1.138; 442.190]). In multivariate analysis, positive predictor was Enzian A score (OR=15.9[2.2; 114.7], p=0.006), and negative predictors was uterine adenomyosis and Enzian B score (OR=0.01[0; 0.495], p=0.02) for live birth after IVF.

CONCLUSION

The present retrospective study cannot strongly conclude about fertility and correlation with Enzian score because the groups are too small. However, it seems that when solely the compartment B is involved by endometriosis, complete full removal of endometriosis leads to better post-operative live births results. Other studies must be done to determine if Enzian classification based on preoperative pelvic MRI could be clinical value in the decision-making strategy for managing infertile patients with deep pelvic endometriosis.

Large ovarian endometriomas are associated with high pre-operative anti-Müllerian hormone concentrations

RESEARCH QUESTION

Are large ovarian endometriomas associated with high pre-operative anti-Müllerian hormone (AMH) concentrations?

DESIGN

Data from 332 women who underwent AMH measurement before surgery for endometriosis were prospectively recorded in a large database. Univariate analysis compared AMH concentrations in terms of the patients' baseline characteristics. A multivariate model was used to identify variables having an independent relationship with AMH concentration.

RESULTS

Among 332 women included in the study, 47.6% were aged 18-30 years, 67.8% were infertile and 85.5% were nulliparous. A total of 66.3% had ovarian endometriomas, and 10.8% had cysts measuring over 6 cm. Bilateral cysts over 3 cm were recorded in 24.7% of the women. Univariate analysis identified two variables that had a statistically significant relationship with AMH concentration: the woman's age (P = 0.01) and cyst size (P < 0.001). Multivariate analysis revealed that ages of 36-40 years and over 40 years showed a significant association with lower AMH concentrations (P = 0.02 and P = 0.009, respectively), while a cyst size of over 6 cm was statistically associated with high AMH concentrations (P < 0.001), after adjustment for smoking, parity, rectosigmoid endometriotic nodules and a bilateral location of endometriomas.

CONCLUSIONS

Pre-operative AMH concentration was significantly increased in women with large endometriomas of over 6 cm, independent of their age or the presence of bilateral endometriomas. This is relevant for both surgeons and patients when planning surgery in women with an intention to conceive post-operatively.

[Early postoperative complications in a multidisciplinary surgical center exclusively dedicated to endometriosis: A 491-patients series]

OBJECTIVE

The objective of our study is to present the activity volume and postoperative complications in a center exclusively destined to endometriosis surgery.

METHODS

Retrospective mono-centric study analyzing data collected prospectively in patients surgically managed for endometriosis from September 2018 to August 2019.

RESULTS

Four hundred and ninety-one patients underwent surgery for endometriosis during 12 consecutive months: 268 for colorectal localizations (54.6%), 51 for endometriosis of the urinary tract (10.4%), 17 for nodules of ileum and right colon (3.5%), 43 for nodules of parametriums (8.8%), 12 for nodules of sacral roots and sciatic nerves (2.4%), 7 for diaphragmatic localizations (1.4%). Among 268 patients with colorectal endometrioses, of which 48.1% concerned the low and mid rectum, shaving was performed in 102 cases, disc excision in 96 cases and colorectal resection in 100 cases. Stoma was performed in 13.1% of the cases. Patients could have 2 different procedures for multiple colorectal nodules. One hundred and ninety-nine ovarian endometriomas were managed by plasma energy ablation in 64.8%, sclerotherapy in 11.1%, cystectomy in 13.1%, oophorectomy in 11.1%. Major postoperative complications included 12 rectovaginal fistulas, while 18 other surgical procedures were carried out for various complications. In all, 38.1% of procedures involved a general surgeon and 5.3% an urologist.

CONCLUSION

The creation of centers exclusively destined to endometriosis surgery allows the multidisciplinary management of a high number of patients, with an over-representation of severe forms and rare locations of the disease, followed by satisfactory complication rates.

SOMA-trial: surgery or medication for women with an endometrioma? Study protocol for a randomised controlled trial and cohort study

STUDY QUESTIONS

The objective of this study is to evaluate the effectiveness and cost-effectiveness of surgical treatment of women suffering from pain due to an ovarian endometrioma when compared to treatment with medication (analgesia and/or hormones). The primary outcome is defined as successful pain reduction (-30% reduction of pain) measured by the numeric rating scale (NRS) after 6 months. Secondary outcomes include successful pain reduction after 12 and 18 months, quality of life, affective symptoms, cost-effectiveness, recurrence rate, need of adjuvant medication after surgery, ovarian reserve, adjuvant surgery and budget impact.

WHAT IS KNOWN ALREADY

Evidence suggests that both medication and surgical treatment of an ovarian endometrioma are effective in reducing pain and improving quality of life. However, there are no randomised studies that compare surgery to treatment with medication.

STUDY DESIGN SIZE DURATION

This study will be performed in a research network of university and teaching hospitals in the Netherlands. A multicentre randomised controlled trial and parallel prospective cohort study in patients with an ovarian endometrioma, with the exclusion of patients with deep endometriosis, will be conducted. After obtaining informed consent, eligible patients will be randomly allocated to either treatment arm (medication or surgery) by using web-based block randomisation stratified per centre. A successful pain reduction is set at a 30% decrease on the NRS at 6 months after randomisation. Based on a power of 80% and an alpha of 5% and using a continuity correction, a sample size of 69 patients in each treatment arm is needed. Accounting for a drop-out rate of 25% (i.e. loss to follow up), we need to include 92 patients in each treatment arm, i.e. 184 in total. Simultaneously, a cohort study will be performed for eligible patients who are not willing to be randomised because of a distinct preference for one of the two treatment arms. We intend to include 100 women in each treatment arm to enable standardization by inverse probability weighting, which means 200 patients in total. The expected inclusion period is 24 months with a follow-up of 18 months.

PARTICIPANTS/MATERIALS SETTING METHODS

Premenopausal women (age ≥ 18 years) with pain (dysmenorrhoea, pelvic pain or dyspareunia) and an ovarian endometrioma (cyst diameter ≥ 3 cm) who visit the outpatient clinic will make up the study population. Patients with signs of deep endometriosis will be excluded. The primary outcome is successful pain reduction, which is defined as a 30% decrease of pain on the NRS at 6 months after randomisation. Secondary outcomes include successful pain reduction after 12 and 18 months, quality of life and affective symptoms, cost-effectiveness (from a healthcare and societal perspective), number of participants needing additional surgery, need of adjuvant medication after surgery, ovarian reserve and recurrence rate of endometriomas. Measurements will be performed at baseline, 6 weeks and 6, 12 and 18 months after randomisation.

STUDY FUNDING/COMPETING INTERESTS

This study is funded by ZonMw, a Dutch organization for Health Research and Development, project number 80-85200-98-91041. The Department of Reproductive Medicine of the Amsterdam UMC location VUmc has received several research and educational grants from Guerbet, Merck KGaA and Ferring not related to the submitted work. B.W.J. Mol is supported by a NHMRC Practitioner Fellowship (GNT1082548) and reports consultancy for ObsEva, Merck KGaA and Guerbet. V. Mijatovic reports grants from Guerbet, grants from Merck and grants from Ferring outside the submitted work. All authors declare that they have no competing interests concerning this publication.

TRIAL REGISTRATION NUMBER

Dutch Trial Register (NTR 7447, http://www.trialregister.nl).

TRIAL REGISTRATION DATE

2 January 2019.

DATE OF FIRST PATIENT’S ENROLMENT

First inclusion in randomised controlled trial October 4, 2019. First inclusion in cohort May 22, 2019.

Pregnancy Rates After Surgical Treatment of Deep Infiltrating Endometriosis in Infertile Patients With at Least 2 Previous In Vitro Fertilization or Intracytoplasmic Sperm Injection Failures

STUDY OBJECTIVE

To assess the postoperative probabilities of pregnancy in patients with deep infiltrating endometriosis (DIE) and ≥2 previous in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) failures.

DESIGN

Retrospective study using data prospectively recorded in the North-West Inter Regional Female Cohort for Patients with Endometriosis (CIRENDO) database.

SETTING

University tertiary referral center.

PATIENTS

Infertile patients under the age of 43 years, having undergone ≥2 previous IVF or ICSI failures, who were surgically managed for DIE.

INTERVENTIONS

Complete excision of DIE.

MEASUREMENTS AND MAIN RESULTS

The pregnancy rate after surgery was assessed. One hundred and four infertile patients had surgery in 7 different centers participating in the database. Seventy-seven women intended to get pregnant postoperatively. Four patients who got pregnant by oocyte donation were excluded, resulting in a sample of 73 women. The mean patient age was 31.9 years (standard deviation [SD], 4.1), and the mean length of history of infertility was 48.4 months (SD, 26.5). Stage III and IV endometriosis were recorded in 83.6% of patients. The mean postoperative follow-up was 46.6 months (SD, 20.5). The postoperative pregnancy rate was 43.8% with a mean time from surgery to pregnancy of 11.1 months. 21.8% of pregnancies were spontaneous, 31.2% were obtained by IVF, 21.8% by frozen embryo transfer, 18.7% by IVF-ICSI, and 3.1% by intrauterine insemination. Multivariate analysis revealed that ovarian surgery, age ≥35 years old, and stage II endometriosis was associated with the probability of conception.

CONCLUSION

Infertile women with ≥2 IVF-ICSI failures may be referred for surgery as it appears related to reasonable postoperative pregnancy rates, particularly when endometriomas surgery is either not required or not performed. Surgery for DIE does not routinely delay conception, as it usually occurs during the year following surgery.

High postoperative fertility rate following surgical management of colorectal endometriosis

STUDY QUESTION

What are fertility outcomes in patients surgically managed for large deep endometriosis infiltrating the rectum who intend to get pregnant postoperatively?

SUMMARY ANSWER

Surgical management for rectal endometriosis is followed by high pregnancy rates, with a majority of natural conceptions.

WHAT IS KNOWN ALREADY

Optimal management such as surgery versus first-line ART for patients with severe deep endometriosis who desire pregnancy is not defined.

STUDY DESIGN, SIZE, DURATION

The study included the patients enrolled in ENDORE randomized trial who attempted pregnancy after the surgery. From March 2011 to August 2013, we performed a two-arm randomized trial, enrolling 60 patients with deep endometriosis infiltrating the rectum up to 15 cm from the anus, measuring more than 20 mm in length, involving at least the muscular layer in depth, and up to 50% of rectal circumference. Postoperative follow-up was prolonged in 55 patients recruited at Rouen University Hospital, and varied from 50 to 79 months. No women were lost to follow-up.

PARTICIPANTS/MATERIALS, SETTING, METHODS

Patients had either conservative surgery by shaving or disc excision, or radical rectal surgery by segmental resection. One gynecologist experienced in deep endometriosis surgery performed all the procedures, assisted when required by three general surgeons experienced in colorectal surgery. Institutional review board approval was obtained to extend postoperative follow-up to 10 years after the surgery. Among patients enrolled at Rouen University Hospital, women who intended to get pregnant after surgery were selected and followed up postoperatively every 6 months for 2 years, then every year. Pregnancy intention, fertility outcomes, conception mode, endometriosis recurrences and digestive and urinary outcomes were rigorously recorded. The primary outcome was postoperative pregnancy rate. Secondary outcomes were conception mode, the delay to conception from the day of surgery and the day when hormonal treatment was stopped, and delivery rate. Kaplan Meier curves were used to estimate the probability of conception after surgery.

MAIN RESULTS AND THE ROLE OF CHANCE

Among the 55 patients enrolled at Rouen University Hospital, 25 had conservative and 30 had radical surgery, and their postoperative follow-up varied from 50 to 79 months. No patient was lost to follow-up. Among the 55 patients, 36 intended to get pregnant after surgery, 23 of whom had unsuccessfully attempted to conceive for more than 12 months before surgery (63%). At the end of follow-up, 29 patients achieved pregnancy (81%), and natural conception was recorded in 17 of them (59% of conceptions). As several women had more than 1 pregnancy (range: 0–3), we recorded 37 pregnancies, 24 natural conceptions (65%) and 29 deliveries (78%). The probabilities of achieving pregnancy at 12, 24, 36 and 48 months postoperatively were 33.4% (95% CI: 20.6–51.3%), 60.6% (44.8–76.8%), 77% (61.5–89.6%) and 86.8% (72.8–95.8%), respectively. Women who had been advised to attempt natural conception achieved pregnancy significantly earlier than patients referred for ART (P = 0.008). In infertile patients, the postoperative pregnancy rate was 74%, and 53% of conceptions were natural.

LIMITATIONS, REASONS FOR CAUTION

The main outcomes of the original trial were related to digestive function and not to fertility. Several factors impacting fertility could not be revealed due to small sample size. The study included a high percentage of young women with an overall satisfactory prognosis for fertility, as patients’ median age was 28 years. The inclusion of only large infiltrations of the rectum does not allow the extrapolation of conclusions to small nodules of <2 cm in length. Only one skilled gynecologic surgeon performed all the procedures.

WIDER IMPLICATIONS OF THE FINDINGS

First-line surgery can be considered in patients with deep endometriosis infiltrating the rectum and pregnancy intention. Patients receiving advice from experienced surgeons on conception modes were more likely to conceive faster after surgery.

STUDY FUNDING/COMPETING INTEREST(S)

This work was supported by a grant from the clinical research program for hospitals (PHRC) in France. The authors declare no competing interests related to this study.

TRIAL REGISTRATION NUMBER

The original randomized trial is registered with ClinicalTrials.gov (number NCT 01291576).

[The Rouen Expert center in the diagnosis and multidisciplinary management of endometriosis: A French pilot experiment]

OBJECTIVES

To retrospectively describe the activity of the Diagnosis and Multidisciplinary Management of Endometriosis Expert Center of Rouen-Normandy, before and after official identification by French Health Authorities.

METHODS

Retrospective study of the main activities of an Expert Center, from January 2013 to March 2018.

RESULTS

The Endometriosis Expert Center of Rouen-Normandy is a regional network, organised as a pyramid with a Referral Center at the top (the Rouen University Hospital) leading a network of public and private Expertise Centers below in Normandy. Ten to 11 Multidisciplinary Team meetings per year were organised, allowing the study of 15 to 20 cases by physicians coming from up to 17different places (hospital, clinic or private practice). 2066patients diagnosed with endometriosis were hospitalised in the Referral Center, among them 615were operated for colorectal endometriosis, among which 607by laparoscopy (97%). The surgical team was multidisciplinary in 444surgeries (72.2%). 50cycles of fertility preservation (oocyte freezing) were led. Research activity allowed the publication of 76scientific articles, among which 41 (53.9 %) in a journal of rank SIGAPS A or B. Medical training was organised for active health professionals as well as students, including school nurses.

CONCLUSION

The Endometriosis Expert Center of Rouen-Normandy pilot project has helped improving the diagnosis and better management of the disease in Normandy. This experiment could be exported to all the other regions of France, in order to unit health professionals with the aim of a national fight program against endometriosis.

Endometriosis surgery and preservation of fertility, what surgeons should know

Colorectal surgeons often participate in the multidisciplinary management of young females with endometriosis. Complications of endometriosis as well as its management often result in infertility since they can involve all pelvic organs including the procreative organs: uterus, ovaries and fallopian tubes. Complete excision of all endometriotic lesions should not be performed at the expense of irreversible destruction of the procreative organs; definitive infertility should not be the price to pay in order to obtain an improvement of the painful symptoms caused by endometriosis. Surgery for ovarian endometriomas should be specifically adapted to the patient's desire for future conception and to her preoperative ovarian reserve. Two main techniques are used to treat ovarian endometriomas: ovarian cystectomy excises the wall of the cyst while ablation consists of destruction of the internal surface of the cyst. The use of mono polar or biolar coagulation for cyst ablation is strongly contra-indicated. Ablation using laser or plasma energy has resulted in comparable rates of post-operative pregnancy to those obtained by ovarian cystectomy. Patients who wish to delay their attempt to conceive for some period of time, should be placed on long-term oral contraception with prevention of menstruation to reduce the risk of recurrent endometriosis. When surgery for colorectal endometriosis is necessary, the laparoscopic approach increases the chances of spontaneous conception compared to laparotomy. Surgery for deep-seated endometriosis has been accompanied by a high rate of spontaneous conception and successful pregnancy and does not seem to decrease the chances for conception by in vitro fertilization.

Surgery and Endometriosis

Care of the endometriosis patient today can be complex and difficult. Once medical management has been exhausted and symptoms persist patients desire further treatment options. This chapter takes an evidence-based approach at discussion of patient surgcical options for treatment of endometriosis symptoms. Surgical techniques, success rates, patient satisfaction, and risks must be discussed and understood at depth before planning patient surgical intervention. This chapter provides reference to current surgical management options and symptom relief following those interventions.

[Deeply infiltrating endometriosis and infertility: CNGOF-HAS Endometriosis Guidelines]

Deeply infiltrating endometriosis is a severe form of the disease, defined by endometriotic tissue peritoneal infiltration. The disease may involve the rectovaginal septum, uterosacral ligaments, digestive tract or bladder. Deeply infiltrating endometriosis is responsible for disabling pain and infertility. The purpose of these recommendations is to answer the following question: in case of deeply infiltrating endometriosis associated infertility, what is the best therapeutic strategy? First-line surgery and then in vitro fertilization (IVF) in case of persistent infertility or first-line IVF, without surgery? After exhaustive literature analysis, we suggest the following recommendations: studies focusing on spontaneous fertility of infertile patients with deeply infiltrating endometriosis found spontaneous pregnancy rates about 10%. Treatment should be considered in infertile women with deeply infiltrating endometriosis when they wish to conceive. First-line IVF is a good option in case of no operated deeply infiltrating endometriosis associated infertility. Pregnancy rates (spontaneous and following assisted reproductive techniques) after surgery (deep lesions without colorectal involvement) varie from 40 to 85%. After colorectal endometriosis resection, pregnancy rates vary from 47 to 59%. The studies comparing the pregnancy rates after IVF, whether or not preceded by surgery, are contradictory and do not allow, to date, to conclude on the interest of any surgical management of deep lesions before IVF. In case of alteration of ovarian reserve parameters (age, AMH, antral follicle count), there is no argument to recommend first-line surgery or IVF. The study of the literature does not identify any prognostic factors, allowing to chose between surgical management or IVF. The use of IVF in the indication "deep infiltrating endometriosis" allows satisfactory pregnancy rates without significant risk, regarding disease progression or oocyte retrieval procedure morbidity.

[Surgical management of deep endometriosis with colorectal involvement: CNGOF-HAS Endometriosis Guidelines]

Deep endometriosis with colorectal involvement is considered one of the most severe forms of the disease due to its impact on patients' quality of life and fertility but also by the difficulties encountered by the clinicians when proposing a therapeutic strategy. Although the literature is very rich, evidence based medicine remains poor explaining the great heterogeneity concerning the management of such patients. Surgery therefore remains a therapeutic option. It improves the intensity of gynecological, digestive and general symptoms and the quality of life. Concerning the surgical approach, it appears that laparoscopy should be the first option; the laparoscopic robot-assisted route can also be proposed. The techniques of rectal shaving, discoid resection and segmental resection are the three techniques used for surgical excision of colorectal endometriosis. The parameters taken into account for the use of either technique are: the surgeon's experience, the depth of infiltration of the lesion within the rectosigmoid wall, the lesion size and circumference, multifocality and the distance of the lesion from the anal margin. In the case of deep endometriosis with colorectal involvement, performing an incomplete surgery increases the rate of pain recurrence and decreases postoperative fertility. In case of surgery for colorectal endometriosis, pregnancy rates are similar to those obtained after ART in non-operated patients. Existing data are insufficient to formally recommend first line surgery or ART in infertile patients with colorectal endometriosis. The surgery for colorectal endometriosis exposes to a risk of postoperative complications and recurrence of which the patients should be informed preoperatively.

Long-term evaluation of painful symptoms and fertility after surgery for large rectovaginal endometriosis nodule: a retrospective study

INTRODUCTION

Optimal surgical treatment of rectovaginal endometriosis remains a controversial topic. The objective of this study was to evaluate long-term postoperative outcomes after rectal shaving or colorectal resection for rectovaginal endometriosis.

MATERIAL AND METHODS

195 patients underwent surgery (172 managed by shaving, 23 by colorectal resection) between January 2000 and June 2013 for rectovaginal endometriosis (>2 cm) involving at least the serosa of the rectum. Primary outcome measures were pain and fertility. Secondary outcome measures were complications, recurrence rates and quality of life.

RESULTS

Mean follow-up was 60 ± 42 months in the shaving group and 67 ± 47 months in the resection group. The mean VAS score for pelvic pain between the pre and postoperative period decreased from 5.5 ± 3.5 (shaving group) and 7.3 ± 2.9 (resection group) to 2.3 ± 2.4 (p < 0.001) and 2.0 ± 1.8 (p < 0.001), respectively. For dysmenorrhea, the mean baseline VAS score fell postoperatively from 7.7 ± 2.8 (shaving group) and 8.2 ± 2.6 (resection group) to 3.3 ± 2.9 (p < 0.001) and 2.7 ± 2.7 (p < 0.001), respectively. Pregnancy rates were 73% for shaving and 69% for resection. Major complications occurred in 4% of patients in the shaving group and in 26% in the resection group (p = 0.001). Thirteen patients (7.6%) from the shaving group and none from the resection group were reoperated for suspicion of endometriosis recurrence (p = 0.37). Postoperative quality of life scores revealed no differences between the two groups.

CONCLUSION

Our study demonstrates that rectal shaving, when feasible for rectovaginal nodule (>2 cm) infiltrating the digestive serosa, has equal impact on pain and pregnancy rates compared with colorectal resection at long-term follow-up, with low complication and favorable pregnancy rates.

Endometriosis and Infertility: A Systematic Review

Endometriosis is one of the most common gynaecological conditions affecting 6% to 12% of women in the reproductive age group. It can be found in 35% to 45% of women who are trying to conceive and are infertile. Infertility is one of the most common problems associated with endometriosis. This review will look at the evidence that endometriosis may lead to infertility and the data looking at whether surgical correction of endometriosis may improve fertility outcomes.

Spontaneous fertility after expectant or surgical management of rectovaginal endometriosis in women with or without ovarian endometrioma: a retrospective analysis

OBJECTIVE

To investigate spontaneous pregnancy rate (SPRs) of women with rectovaginal endometriosis (RV) with/without ovarian endometrioma (OMA) and treated with the use of expectant or surgical management.

DESIGN

Retrospective study.

SETTING

University hospital.

PATIENT(S)

The study included patients with RV with or without OMA who tried to conceive spontaneously for 1 year either without undergoing surgery (group E; n = 284) or after surgery (group S; n = 221). The study population was further divided into four subgroups: women with RV without OMA who directly tried to conceive (group eRV; n = 121) or tried to conceive after surgery (group sRV; n = 96), and women with RV with OMA who directly tried to conceive (group eOMA; n = 163) or tried to conceive after surgery (group sOMA; n = 125).

INTERVENTIONS(S)

Expectant or surgical management.

MAIN OUTCOME MEASURE(S)

Crude and cumulative SPRs.

RESULT(S)

At 1 year, crude and cumulative SPRs were lower in group E (17.3% and 23.8%, respectively) than in group S (35.7% and 39.5%). Similarly, crude and cumulative SPRs were lower in group eRV (24.8% and 30.6%) than in group sRV (42.7% and 45.7%, respectively) and in group eOMA (11.7% and 18.0%) than group sOMA (30.4% and 34.5%). At 1 year, crude and cumulative SPRs were higher in group eRV (24.8% and 30.6%) than in group eOMA (11.7% and 18.0%), and in group sRV (42.7% and 45.7%) than in group sOMA (30.4% and 34.5%).

CONCLUSION(S)

Crude and cumulative SPRs are lower in women treated with the use of expectant rather than surgical management. The presence of OMAs decreases SPRs independently from the treatment modality adopted.

[Conservative management of endometrioma in women undergoing in vitro fertilization]

Endometriosis is a chronic disease. The pathogenesis is actually still unclear. Endometriosis is responsible for infertility and/or pelvic pain. One of the most important features of the disease is the heterogeneity (clinical and anatomical). Among the different phenotypes of endometriosis, the ovarian endometrioma seems to most important lesion in the management of endometriosis-related infertility. Surgical treatment is associated to a decrease of the ovarian reserve and a potential detrimental effect on in vitro fecondation (IVF) outcomes. Thus, the choice between conservative or surgical management of endometrioma before IVF is actually debated. The advantages and drawback of surgical and conservative management should be discussed before to plan the treatment. In the present review, we aimed at assessing the risks of a conservative management of endometrioma as compared to surgery before IVF.

Endometrioma in Adolescents and Future Reproductive Health

There continues to be debate over the nature and progression of ovarian endometriomas in adolescence due to the possibility that they may have a different origin and to the impossibility to be able to predict progress.

The hypothesis of a different origin traces its roots in the phenomenon called “neonatal menstruation” (NUB), occurring in approximately 5% of newborn. The retrograde shedding of neonatal endometrium may contain progenitor cells and stroma that may lie dormant under the peritoneal surface until being activated when estrogens begin to rise.

In teenagers, ovarian endometriomas are often preceded by highly angiogenic implants in the fossa ovarica, with adhesion formation resulting in the invagination of the ovarian cortex and the creation of a pseudocyst.

Use of imaging techniques makes it possible to diagnose even small endometriomas. This is vital to their management, since there is evidence that the disease in an adolescent represents a severe condition, with tendency to progression. In addition, if intervention is decided, the first surgical procedure can determine the ultimate outcome of her reproductive life, because there is a significantly higher risk of inadvertently removing ovarian tissue in the presence of an endometrioma than of other ovarian pathologies. For this reason, techniques avoiding additional trauma to the ovary should be preferred and those who wish to become pregnant should attempt conception as soon as possible; if pregnancy is not sought, hormonal therapy is strongly advised.

Finally, young age at diagnosis may constitute a pivotal factor in considering fertility preservation.

Treatment of endometrioma for improving fertility

Endometrioma is a frequent clinical manifestation of endometriosis. It is controversial how endometriomas may affect women's fertility. This review addresses: the impact of the endometrioma per se and of its surgical treatment on ovarian physiology, on the ovarian reserve, on spontaneous conception and pregnancy outcomes, and on IVF/ICSI outcomes. Based on current evidence, although there are plausible biological detrimental effects on the ovarian cortex surrounding the endometrioma and an impairment of the normal ovarian physiology, the clinical impact of the endometrioma per se is not significantly altered. There is a negligible detrimental effect on ovarian reserve with spontaneous ovulation not being impaired. Conversely, surgical excision of an endometrioma reduces ovarian reserve as measured by AMH levels. Studies investigating the impact of the endometrioma per se and of its surgical treatment in women requiring IVF/ICSI show similar implantation rates, clinical pregnancy rates and live birth rates between women with endometrioma and controls.