Ureteral endometriosis: a systematic review of epidemiology, pathogenesis, diagnosis, treatment, risk of malignant transformation and fertility

Safety and efficacy of pharmacotherapies for pelvic inflammatory disease and endometriosis

INTRODUCTION

Endometriosis and pelvic inflammatory disease (PID) are gynecological conditions affecting women of reproductive age and causing pain symptoms. The symptoms caused by these conditions are similar; thus, the differential diagnosis may be challenging. The treatment of these conditions is very different because PID is treated with antibiotic therapy, while endometriosis is treated with hormonal therapies suppressing estrogen levels.

AREAS COVERED

A narrative review was conducted through a comprehensive literature search on endometriosis and PID. The search strategy incorporated relevant keywords and MeSH terms related to these topics.

EXPERT OPINION

The antibiotics used to manage PID have high efficacy and safety profiles. Commonly prescribed regimens include a combination of ceftriaxone, doxycycline, and metronidazole. These antibiotics are generally well-tolerated, with most adverse effects being mild and manageable (gastrointestinal disturbances or hypersensitivity reactions). Hormonal therapies are a cornerstone in the management of endometriosis; they include combined oral contraceptives (COCs), progestins, gonadotropin-releasing hormone (GnRH) agonists, and antagonists. COCs and progestins are generally well-tolerated with a favorable safety profile, though they may cause side effects (breakthrough bleeding and mood changes). Oral GnRH antagonists have emerged as a noteworthy option, offering partial estrogen suppression and thereby overcoming the limitations associated with previously used GnRH agonists.

Ultrasound assessment of the pelvic sidewall: methodological consensus opinion

A standardized methodology for the ultrasound evaluation of the pelvic sidewall has not been proposed to date. Herein, a collaborative group of gynecologists and gynecological oncologists with extensive ultrasound experience presents a systematic methodology for the ultrasonographic evaluation of structures within the pelvic sidewall. Five categories of anatomical structures are described (muscles, vessels, lymph nodes, nerves and ureters). A step-by-step transvaginal ultrasound (or, when this is not feasible, transrectal ultrasound) approach is outlined for the evaluation of each anatomical landmark within these categories. Accurate assessment of the pelvic sidewall using a standardized approach improves the detection and diagnosis of non-gynecological pathologies that may mimic gynecological tumors, reducing the risk of unnecessary and even harmful intervention. Furthermore, it plays an important role in completing the staging of malignant gynecological conditions. Transvaginal or transrectal ultrasound therefore represents a viable alternative to magnetic resonance imaging in the preoperative evaluation of lesions affecting the pelvic sidewall, if performed by an expert sonographer. A series of videoclips showing normal and abnormal findings within each respective category illustrates how establishing a universally applicable approach for evaluating this crucial region will be helpful for assessing both benign and malignant conditions affecting the pelvic sidewall. © 2024 The Author(s). Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.

Ultrasound Diagnosis of Bowel Endometriosis

BACKGROUND

Bowel endometriosis is one of the more severe manifestations of deep endometriosis; it may cause pain and intestinal symptoms. The noninvasive diagnosis of bowel endometriosis is of crucial importance in planning the management of patients affected by this condition.

OBJECTIVES

This review aims to describe how transvaginal ultrasonography (TVS) is performed in patients with suspicion of rectosigmoid endometriosis, the diagnostic performance, and the strengths and limitations of this technique.

METHODS

To identify relevant literature, a literature search was performed across the PubMed and Google Scholar databases up to July 2024.

OUTCOME

Numerous meta-analyses have demonstrated that TVS has high diagnostic accuracy in diagnosing rectosigmoid endometriosis. Rectosigmoid nodules can present with different morphological characteristics, but they are typically described as irregular, hypoechoic nodules located in the anterior wall of the rectosigmoid colon. The presence of "soft markers," such as a negative sliding sign and kissing ovaries, can further reinforce the diagnosis of this condition. Posterolateral parametrial involvement often coexists with large rectal nodules. Introducing water contrast into the rectosigmoid does not improve the performance of TVS in diagnosing rectosigmoid endometriosis.

CONCLUSIONS AND OUTLOOK

TVS should be the first-line investigation in women suspected of having rectosigmoid endometriosis. The widespread use of TVS for the diagnosis of intestinal endometriosis can reduce diagnostic delays and facilitate the treatment of patients affected by this condition.

Deep Infiltrating Endometriosis of the Left Ureter Managed with Laparoscopic Ureterolysis Combined with Allium Ureteral Self-Expandable Stent: A Case Report

Introduction: In endometriosis, urinary tract involvement occurs in 1-5.5% of cases, where the ureter is affected in 9-23%. Unfortunately, endometriosis may remain asymptomatic even with significant anatomical progression. A delay in the diagnosis and treatment of ureteral endometriosis may result in hydronephrotic kidney damage and functional impairment. Methods: We present a case of a 36-year-old woman with a left ureteral stricture caused by deep infiltrating endometriosis accompanied by severe kidney-induced arterial hypertension. In March 2022, the patient underwent both laparoscopic excision/evaporation of deep infiltrating endometriosis from the left ovarian fossa and left ureterolysis, followed by an ureterorenoscopic dilatation of the left ureter via the placement of an Allium self-expandable stent. Results: This stent was successfully removed 18 months later. A computed tomography check-up confirmed normal ureteral patency with no signs of endometriosis. Elevated blood pressure also resolved. Conclusions: Deep infiltrating endometriosis can lead to asymptomatic yet serious complications. A successful treatment of ureteral endometriosis may require multidisciplinary management, including a simultaneous laparoscopic and ureterorenoscopic approach. Ureteral stent placement is a minimally invasive state-of-the-art solution for ureteral stricture(s) and should be considered the first choice in women of reproductive age suffering from ureteral deep infiltrating endometriosis.

Concordance between Preoperative #ENZIANi Score and Postoperative #ENZIANs Score Classification-Why Do We Choose #ENZIAN and How Does It Impact the Future Classification Trend?

Objectives: To assess the concordance of the preoperative application of the #ENZIAN classification (#ENZIANi) with the postoperative result (#ENZIANs) using surgical findings as the reference standard. Methods: This retrospective study included 282 consecutive patients with deep endometriosis undergoing surgical treatment. Preoperative assessment with transvaginal sonography and magnetic resonance imaging was compared with postoperative assessment. Concordance and diagnostic test evaluation were calculated. Results: The highest concordance was observed in the F (abdominal wall endometriosis) with k Cohen of 0.837, following the values for pelvic locations, with 0.795 for T left, 0.791 for T right, 0.776 for F (adenomyosis), 0.766 for C (rectum), and 0.75 and 0.72 for O right k and O left, respectively. The highest sensitivity was demonstrated for the P compartment *(98%), T compartment (both sides 97%), and A, B, C (94-96%), corresponding with deep endometriosis. Conclusions: Preoperative assessment using TVS/TAS + MRI with the ENZIANi score correlates well with the ENZIANs postoperative score and demonstrates good concordance in the detection and localization of deep endometriosis, thereby minimizing false negative results and ensuring accurate preoperative staging. The ENZIAN classification is well-suited to surgeon needs and benefits from continuous development. Future improvements, such as adding the expanded C module, may be considered in the next edition.

A Systematic Review of Ureteral Reimplantation Techniques in Endometriosis: Laparoscopic Versus Robotic-Assisted Approach

Introduction: Endometriosis, characterized by the presence of endometrial tissue outside the uterus, includes deep endometriosis (DE), which can affect the urinary tract. Ureteral endometriosis (UE) is a rare but significant manifestation that can lead to ureteral obstruction, hydronephrosis, and potential kidney loss. This systematic review evaluates the effectiveness and outcomes of laparoscopic versus robotic-assisted ureteral reimplantation techniques in patients with UE. Materials and Methods: A systematic literature search was conducted following PRISMA guidelines across PubMed, MEDLINE, Embase, Web of Science, and the Cochrane Library, from inception to July 2024. Studies included patients with UE who underwent ureteral reimplantation using laparoscopic or robotic-assisted techniques. Data on patient demographics, surgical technique, duration of surgery, complications, follow-up duration, and clinical outcomes were extracted and analyzed. Results: Twelve studies met the inclusion criteria, comprising 225 patients in the laparoscopic group and 24 in the robotic-assisted group. Lich-Gregoir ureteral reimplantation, with or without a psoas hitch, was the predominant technique used. The average surgery duration was 271.1 min for the laparoscopic group and 310.4 min for the robotic-assisted group. Recurrence rates for UE were 2.95% for laparoscopic and 5.9% for robotic-assisted procedures. The robotic-assisted group had a significantly shorter hospital stay (6.7 days vs. 9.1 days, p < 0.01). Postoperative complication rates were comparable between the two techniques (p = 0.422). Conclusions: Both laparoscopic and robotic-assisted techniques for ureteral reimplantation in UE are safe and effective, with the choice of technique guided by surgeon expertise and specific clinical scenarios. However, the limited number of robotic cases introduces a bias, despite statistical significance.

Ureteral endometriosis: MR imaging appearance for predicting complex procedures

Rationale and objectives

To describe MRI characteristics of ureteral endometriosis (UE) in identifying intrinsic involvement of the ureteric wall and predicting complex procedures.

Methods

Thirty-three UE lesions in 30 patients treated for UE over a 20-year period were reviewed. A systematic analysis of 13 MRI (ureteric wall thickening, circumference, T1 signal, T2 signal, ureterectasis, lateral parametrial endometriosis (LPE), rectal endometriosis, the foregoing three-characteristic diameter, ovarian endometriomas, adenomyosis, paraurethral endometriosis) and 5 clinical (age, BMI, CA125, creatinine and rAFS stage) characteristics was performed. MRI results were compared to histology and surgical procedure performed (simple versus complex ureteral procedures).

Results

Twenty-five extrinsic and 8 intrinsic UE were pathologically identified. Twenty lesions underwent a simple procedure, and 12 underwent a complex procedure, with 1 ureteroscopic biopsy. There were significant differences in the characteristics of ureteric wall thickening, the diameter of dilated ureter and LPE, rectal endometriosis and adenomyosis between extrinsic and intrinsic UE (p < 0.05). UE was associated with LPE (p = 0.033). The criteria of ureteral wall thickening more accurately predicted intrinsic UE than circumference, but the AUC was not significant difference (AUC, 0.806 and 0.639; 95 % CI, [0.594, 0.937] and [0.419, 0.823], respectively; p = 0.350). There were significant differences in creatinine, thickening and adenomyosis between the simple and complex procedures (p < 0.05). In 11 lesions with the absence of ureterectasis, 4 lesions with hydronephrosis and thickening were intrinsic and underwent complex procedures, while 7 lesions extrinsic and simple.

Conclusions

Ureteric wall thickening as a analytical criterion may accurately predict intrinsic UE and complex ureteric procedures.

Laparoscopic nerve lysis for deep endometriosis improves quality of life and chronic pain levels: A pilot study

OBJECTIVES

To assess the benefit of surgical management of patients with endometriosis infiltrating pelvic nerves in terms of pain, analgesic consumption, and quality of life (QOL).

METHODS

We conducted a retrospective cohort study In an Endometriosis referral center at a tertiary care university affiliated medical center. Patients diagnosed with endometriosis that underwent laparoscopic neurolysis for chronic pain were included. Patients rated their pain before and after surgery and differentiated between chronic pain and acute crises. Patients were requested to maintain a record of analgesic consumption and to evaluate their quality-of-life (QOL).

RESULTS

Of the 21 patients in our study 15 (71.5 %) had obturator nerve involvement, 2 (9.5 %) had pudendal nerve involvement and 4 (19 %) had other pelvic nerve involvement. Median postoperative follow - up was of 8 months. All but 2 patients (9.6 %) had significant chronic pain improvement with a mean decrease of VAS of 3.05 (±2.5). Analgesic habits changed postoperatively with a significant decrease of 66 % of patients' daily consumption of any analgesics. Surgery improved QOL in 12 cases (57.1 %) and two patients (9.6 %) completely recovered with a high QOL.

CONCLUSION

Neurolysis and excision of endometriosis of pelvic nerves could results in significant improvement of quality of life.

Imaging of Urinary Bladder and Ureteral Endometriosis with Emphasis on Diagnosis and Technique

Endometriosis is a chronic inflammatory gynecological condition affecting 10-15% of women in the reproductive age group. The urinary tract is the second most common extragenital organ system affected by endometriosis, and the urinary bladder and ureter are the two most common sites involved. Involvement of the urinary bladder can cause chronic debilitating symptoms, whereas ureteral involvement may lead to asymptomatic loss of renal function. Both conditions are frequently unsuspected, leading to a delay in diagnosis. Therefore, it is important to recognize this entity early, for which knowledge of imaging appearances and techniques is helpful. In this review article, we describe (a) endometriosis background, pathogenesis, definitions and clinical symptoms, (b) imaging appearance, with emphasis on ultrasound and MRI findings of urinary bladder and ureteric endometriosis, (c) ultrasound technique and MRI sequences useful for making the correct diagnosis, (d) overview of the treatment options and key imaging findings that are important to the surgeon for surgical planning, and (e) a structured reporting template useful for multidisciplinary patient management.

Endometrioma surgery: Hit with your best shot (But know when to stop)

Ovarian endometriomas (OEs) are commonly detected by ultrasound in individuals affected by endometriosis. Although surgery was widely regarded in the past as the gold standard for treating OEs, especially in the case of large cysts, the surgical management of OEs remains debated. Firstly, OEs often represent the "tip of the iceberg" of underlying deep endometriosis, and this should be considered when treating OEs to ameliorate patients' pain for focusing on the surgical objectives and providing better patient counseling. In the context of fertility care, OEs may have a detrimental effect on ovarian reserve through structural alterations, inflammatory responses, and oocyte reserve depletion. Conversely, the surgical approach may exacerbate the decline within the same ovarian reserve. While evidence suggests no improvement in in-vitro fertilization (IVF) outcomes following OE surgery, further studies are needed to understand the impact of OE surgery on spontaneous fertility. Therefore, optimal management of OEs is based on individual patient and fertility characteristics such as the woman's age, length of infertility, results of ovarian reserve tests, and surgical background. Among the available surgical approaches, cystectomy appears advantageous in terms of reduced recurrence rates, and traditionally, bipolar coagulation has been used to achieve hemostasis following this approach. Driven by concerns about the negative impact on ovarian reserve, alternative methods to obtain hemostasis include suturing the cyst bed, and novel methodologies such as CO2 laser and plasma energy have emerged as viable surgical options for OEs. In instances where sonographic OE features are non-reassuring, surgery should be contemplated to obtain tissue for histological diagnosis and rule out eventual ovarian malignancy.

A case report of ureteral endometriosis with severe hydronephrosis

Ureteral endometriosis accounts for about 5 % of urologic endometriosis, with a peak incidence in the age group of 30-35 years, usually with unilateral onset. Because of its insidious onset, often combined with asymptomatic loss of renal function, and the ineffectiveness of medications, surgery is the gold standard of treatment.Thus, here we report a case of ureteral endometriosis with severe hydronephrosis to raise awareness of this condition.

A rare case of concomitant endometrioid adenocarcinoma arising from uterine adenomyosis and clear cell carcinoma arising from parametrial deep endometriosis

BACKGROUND

Carcinomatous changes from the ectopic endometrial glands in endometriosis have been reported in many studies, but malignant transformation from uterine adenomyosis/adenomyoma is rare. And clear cell-like adenocarcinoma represents a seldom-encountered malignant pathological variant of ectopic endometrium.

CASE PRESENTATION

This case report presents a case of a 44-year-old nulliparous woman begun with abdominal pain and intestinal obstruction. Past medical history showed laparoscopic ovarian endometriotic cyst excision. Ultrasound indicated adenomyoma and a parametrial hypoechoic nodule with abundant blood flow signals and unclear boundaries. Deep invasive endometriosis was considered preoperatively. The patient underwent laparoscopic subtotal hysterectomy and bilateral adnexa resection. Chocolate cyst-like lesion was observed in the parametral lesion. Postoperative pathological examinations suggested endometrioid adenocarcinoma arising from eutopic endometrium and adenomyoma. Ectopic endometrium in the myometrium combined with atypical hyperplasia and formation of endometrioid adenocarcinoma. Left parametrial lesions suggested poorly differentiated endometrioid adenocarcinoma combined with clear cell carcinoma. CD10 + endometrial stromal cells were observed surrounding tumor cell masses. Combined with surgical founding and pathological characters of the left parametrial adenocarcinoma, the parametrial lesions were more likely to be carcinomatous changes of the original deep endometriosis.The patient underwent subsequent transabdominal tumor cell reduction surgery and chemotherapy.

CONCLUSION

We herein present a rare case of combined endometrioid adenocarcinoma arising from uterine adenomyosis and clear cell carcinoma arising from parametrial deep endometriosis that may help inspire additional studies in the future. The patient underwent robot-assisted laparoscopic subtotal hysterectomy, bilateral adnexa resection, deep endometriosis lesion resection and bilateral ureteral stent placement. Following surgery, a chemotherapy regimen of Taxol and Carboplatin was administered.

Endometriosis and Adenomyosis: Modern Concepts of Their Clinical Outcomes, Treatment, and Management

Endometriosis and adenomyosis are complex gynecological conditions characterized by diverse clinical presentations, including superficial peritoneal endometriosis (SPE), ovarian endometrioma (OMA), and deep infiltrating endometriosis (DIE). The hallmark features of these pathologies involve the manifestation of pain symptoms and infertility, and approximately 30% of patients are asymptomatic. Despite ongoing research, definitive treatments for these conditions remain elusive, and clinical management primarily revolves around medical or surgical interventions. Recent advancements in our understanding of the efficacy of various treatment modalities, including medical therapy and surgical interventions, have provided clinicians with valuable insights into pain relief and fertility preservation. This review aims to provide an updated overview of the latest literature on clinical outcomes, treatment options, and management strategies for different types of endometriosis. By synthesizing the newest available data, this review seeks to inform clinicians and guide decision making based on factors such as patients' symptom severity, childbearing desire, and overall health.

Ultrasonographic characterization of parametrial endometriosis: a prospective study

OBJECTIVE

To study the ultrasonographic diagnostic accuracy and characteristics of parametrial endometriosis comprehensively.

DESIGN

This prospective study enrolled patients with suspected deep endometriosis (DE) scheduled for laparoscopic surgical treatment. Preoperative ultrasonographic examinations were performed following the International Deep Endometriosis Analysis criteria. This study aimed to evaluate the presence of parametrial endometriosis and its ultrasonographic characteristics, using surgical diagnosis as the reference standard. Additionally, indirect signs of DE and concomitant DE nodules associated with parametrial involvement were identified, assessing their predictive significance in the anterior, lateral, and posterior parametrial areas.

SETTING

Referral institution for endometriosis.

PATIENTS

Patients with suspected DE scheduled for surgical treatment.

INTERVENTIONS

Standardized preoperative ultrasonographic examination.

MAIN OUTCOME MEASURES

The diagnostic accuracy of transvaginal ultrasound in identifying parametrial endometriosis, including sensitivity and specificity, and the ultrasonographic characteristics of parametrial nodules, prevalence in distinct parametrial areas, and associations with indirect DE signs and concomitant DE nodules.

RESULTS

Surgical confirmation of parametrial nodules was observed in 105 of 545 patients (left, 18.5; right, 17.0%). Transvaginal ultrasound demonstrated a sensitivity of 77.1% (95% confidence interval, 68.0%-84.8%) and specificity of 99.1% (95% confidence interval, 67.7%-99.8%). Parametrial nodules typically exhibited characteristics such as a mild hypoechoic appearance (83.6%), starry morphology (74.7%), irregular margins (70.2%), and low vascularization. The posterior parametrial region was the most common location (52.2%), followed by the lateral (41.0%) and anterior (6.8%) parametrial regions. Concomitant DE nodules in the rectum (63.5%) and infiltrating the rectovaginal septum (56.5%) were significantly more prevalent in patients with parametrial involvement. Indirect DE signs, such as the ovaries fixed to the uterine wall (71.8%) and the absence of a posterior sliding sign (51.8%), were also more common in women with parametrial nodules. Hydronephrosis, although relatively uncommon in patients with parametrial involvement (8.2%), was largely detected in lateral parametrial nodules (70.0%).

CONCLUSIONS

This study represents a systematic ultrasonographic characterization of parametrial endometriosis. Specifically, it comprehensively assesses the diagnostic accuracy of transvaginal ultrasound in identifying parametrial involvement within a sizable cohort of patients with preoperative suspicion of DE.

CLINICAL TRIAL REGISTRATION NUMBER

NCT06017531.

Keep your attention closer to the ureters: Ureterolysis in deep endometriosis surgery

Endometriosis surgery involving the ureter poses significant challenges requiring meticulous surgical techniques and vigilant postoperative care. This chapter addresses key aspects of ureterolysis techniques, intraoperative management of ureteral injuries, and postoperative care in the context of endometriosis surgery. Ureterolysis methods aim to isolate and mobilize the ureter while preserving its vascularity. Cold instruments and careful dissection are recommended to prevent thermal injury during surgery. Intraoperative tools such as indocyanine green (ICG) show promise in assessing for vascular compromise. Over half of ureteral injuries are detected postoperatively, necessitating a high index of suspicion. Optimal postoperative care in the case of ureteral injury involves Foley catheterization for decompression, ureteral stenting, and meticulous follow-ups to monitor healing and renal function. While advances have been made in surgical techniques and diagnostic tools, gaps persist in preoperative imaging optimization and predictive models for identifying at-risk patients. This chapter aims to bridge existing knowledge gaps, optimize surgical practices, and enhance the overall care and outcomes of patients undergoing endometriosis surgery involving the ureter.

"From the tip to the deep of the iceberg": Parametrial involvement in endometriosis

Deep endometriosis (DE) can be localized in the parametrium, a complex bilateral anatomical structure, sometimes necessitating intricate surgical intervention due to the potential involvement of autonomic nerves, uterine artery, and ureter. If endometriotic ovarian cysts have been considered metaphorically representative of "the tip of the iceberg" concerning concealed DE lesions, it is reasonable to assert that parametrial lesions should be construed as the most profound region of this iceberg. Also, based on a subdual clinical presentation, a comprehensive diagnostic parametrial evaluation becomes imperative to strategize optimal management for patients with suspected DE. Recently, the ULTRAPARAMETRENDO studies aimed to evaluate the role of transvaginal ultrasound for parametrial endometriosis, showing distinctive features, such as a mild hypoechoic appearance, starry morphology, irregular margins, and limited vascularization. The impact of medical therapy on parametrial lesions has not been described in the current literature, primarily due to the lack of adequate detection at imaging. The extension of DE into the parametrium poses significant challenges during the surgical approach, thereby increasing the risk of intra- and postoperative complications, mainly if performed by centers with low expertise and following multiple surgical procedures where parametrial involvement has gone unrecognized. Over time, the principles of nerve-sparing surgery have been incorporated into the surgical DE treatment to minimize iatrogenic damage and potentially reduce the risk of functional complications.

Research progress of indocyanine green fluorescence technology in gynecological applications

Indocyanine green is a near-infrared fluorescent dye which is widely used in various fields of surgery and gynecology. It is currently mainly used to detect various malignant tumors, sentinel lymph nodes, endometriosis lesions, ureter or intestinal occlusion, vaginal perfusion, uterine arterial blood perfusion, pelvic nerve, uterine niche, lymphatic edema, metastatic lesion shadow, and so on, providing new methods for decision-making during surgery. This article elaborates the application progress of indocyanine green fluorescence technology in gynecology.

Influence of ovarian cysts on ovarian reserve and fertility: A case-control study

OBJECTIVE

The aim of this study was to evaluate the impact of having an ovarian cyst and undergoing cystectomy on the expression of ovarian reserve markers among adolescent females who live in Armenia.

METHODS

We conducted a prospective case-control study. Cases were arranged into two groups. The postoperative group (POG) included those who underwent unilateral ovarian cystectomy, and those in the benign ovarian cyst group (BOCG) had complex ovarian cysts with a diameter of 5 cm or more. Adolescents without ovarian pathologies were included in the reference group (RFG). Levels of anti-Mullerian hormone (AMH) and follicular stimulating hormone (FSH) were measured, and an ultrasound investigation of antral follicular count (AFC) was also done.

RESULTS

Mean differences between baseline and 6-month follow-up levels of AMH, AFC significantly decreased in both the POG and BOCG compared to the RFG. However, the decrease was more significant in the POG: a decrease of 0.86 ng/mL for AMH and 3.11 ng/mL for AFC versus decreasing by 0.61 ng/mL for AMH and 1.68 ng/mL for AFC. Meanwhile, in the BOCG, 6-month FSH levels did not show any significant changes compared to the baseline measurement. In comparison with the reference group, there was a significant decrease in the levels of AMH and AFC among participants who had endometriomas and cystadenomas.

CONCLUSION

Benign ovarian cysts 5 cm or more in diameter, as well as cystectomy, statistically affect OR after 6 months. Therefore, adolescents with ovarian cyst or cystectomy need individualized support to maintain reproductive age fertility.

Surgical Management of Endometriosis Involving the Bladder and Ureter

BACKGROUND

Endometriosis is a chronic, debilitating condition affecting up to 10% of reproductive-age women. Urinary tract endometriosis is found in 1%-6% of women diagnosed with pelvic endometriosis, with the most common sites being the bladder (70%-85%), ureter (9%-23%), and kidney (4%). Patients typically present with symptoms such as lower abdominal pain, dysuria, and urgency. Unfortunately, urinary tract endometriosis is often asymptomatic, potentially leading to silent obstructive uropathy and kidney failure.

OBJECTIVE

To demonstrate a step-by-step approach for the surgical management of urinary tract endometriosis using conventional laparoscopy for partial cystectomy and robotic-assisted laparoscopy for ureteroneocystostomy.

MATERIAL AND METHOD

Surgical video of 2 cases managed in an academic tertiary referral center for endometriosis. The first case was a 38-year-old Gravida 3, Para 3 with a history of hysterectomy who had an MRI which revealed a T2 hypointense bladder nodule consistent with endometriosis. Patient had significant urinary urgency, dysuria, and suprapubpic pain that improved but did not disappear after starting oral progestin therapy (5 mg of norethindrone). A cystoscopy was first performed to confirm MRI findings of bladder lesion and to delineate borders and depth of invasion. The second case was a 35-year-old nulliparous woman with chronic pelvic pain and primary infertility. The patient had a history of stage IV endometriosis with deep endometriosis into the bowel and extrinsic encasement of the ureters causing subsequent hydronephrosis requiring bilateral ureteral stents. She had continued daily pelvic pain despite of being on oral contraceptives for medical management of endometriosis. She subsequently underwent bilateral percutaneous nephrostomy tube placement to allow for ureteral rest prior to surgery.

RESULTS

In the first case, conventional laparoscopy was utilized to perform bilateral ureterolysis, bladder mobilization, partial cystectomy for complete excision of the lesion, and 2-layered bladder closure. Use of indigo carmine assisted with ureteral orifice identification. In the second case, a cystoscopy was performed with injection of Indocyanine green to assist with ureteral identification. After ureterolysis, distal ureteric obstruction due to extensive disease was confirmed on laparoscopy and ureteroscopy. Bilateral ureteroneocystostomy with placement of Double-J ureteral stents was performed using a robotic-assisted approach. Each patient had an indwelling Foley catheter for bladder decompression during recovery. Pathology in both cases revealed endometriosis. Both patients had an uneventful postoperative course. A postoperative retrograde cystogram confirmed adequate repair prior to removal of each Foley catheter. Patient 2 had uncomplicated office stent removal 6 weeks postoperatively and had a normal renal ultrasound with no hydronephrosis 6 months postoperatively.

CONCLUSION

Endometriosis is an increasingly common condition. It is important for gynecological surgeons to have the proper understanding of anatomy, surgical technique, and multidisciplinary care needed with urology for safe and complete excision of bladder and ureter endometriosis.

The Diagnostic Accuracy of Transvaginal Ultrasound for Detection of Ureteral Involvement in Deep Infiltrating Endometriosis: A Systematic Review and Meta-Analysis

OBJECTIVE

The aim of this study is to determine the accuracy of transvaginal ultrasound (TVU) for the diagnosis of ureteral involvement in women with deep infiltrating endometriosis (DIE).

METHODS

The meta-analysis included primary studies comparing the use of TVU for diagnosing endometriotic involvement of the ureter, using laparoscopic surgery and histological diagnosis as the reference standard. Search was performed in several databases (Scopus, Web of Science, and PubMed/MEDLINE). The studies' quality and bias risk were assessed using the Quality Assessment of Diagnostic Accuracy Study-2 (QUADAS-2). Diagnostic performance was estimated by assessing pooled sensitivity and specificity.

RESULTS

A total of 496 citations were found. Six articles were ultimately selected for this systematic review and meta-analysis after the inclusion and exclusion criteria were applied. Pooled sensitivity and specificity were 0.81 (95% CI: 0.42-0.96), 1.00 (95% CI: 0.93-1.00). The heterogeneity observed was high for both sensitivity and specificity. Overall risk of bias was low.

CONCLUSION

TVU is a valuable tool for the pre-operative identification of ureteral involvement by DIE.

A review of phase II and III drugs for the treatment and management of endometriosis

INTRODUCTION

Endometriosis is an estrogen-dependent disease that gives rise to pelvic pain and infertility. Although estroprogestins and progestins currently stand as the first-line treatments for this condition, demonstrating efficacy in two-thirds of patients, a significant portion of individuals experience only partial relief or symptom recurrence following the cessation of these therapies. The coexistence of superficial, deep endometriosis, and ovarian endometriomas, as three distinct phenotypes with unique pathogenetic and molecular characteristics, may elucidate the current heterogeneous biological response to available therapy.

AREAS COVERED

The objective of this review is to furnish the reader with a comprehensive summary pertaining to phase II-III hormonal treatments for endometriosis.

EXPERT OPINION

Ongoing research endeavors are directed toward the development of novel hormonal options for this benign yet debilitating disease. Among them, oral GnRH antagonists emerge as a noteworthy option, furnishing rapid therapeutic onset without an initial flare-up; these drugs facilitate partial or complete estrogen suppression, and promote prompt ovarian function recovery upon discontinuation, effectively surmounting the limitations associated with previously employed GnRH agonists. Limited evidence supports the use of selective estrogen and progesterone receptor modulators. Consequently, further extensive clinical research is imperative to garner a more profound understanding of innovative targets for novel hormonal options.

Laparoscopic ureteroneocystostomy and round ligament bladder hitching for ureteral stenosis in parametrial deep endometriosis: Our tips for a tension-free anastomosis

OBJECTIVE

To investigate the feasibility and the efficacy of laparoscopic ureteroneocystostomy with round ligament bladder hitching.

METHODS

This is a monocentric retrospective study. Enrolled patients affected by deep endometriosis underwent laparoscopic nerve-sparing parametrectomy and monolateral ureteroneocystostomy with bladder suspension to the round ligament. Perioperative and postoperative outcomes were collected, as well as urinary and pain symptoms before and after surgery.

RESULTS

Laparoscopic ureteroneocystostomy with round ligament bladder hitching was performed in nine women. The most frequent postoperative complication was post-voiding urinary retention (22.2%). No ureteral fistula or stenosis of the anastomosis was reported.

CONCLUSION

In selected cases of ureteral resection and reimplantation, performing a round ligament bladder hitching allowed us to overcome the ureteral gap. This is a safe and feasible procedure to ensure stability of the anastomosis and avoid the possible disadvantages of the "standard" psoas hitch procedure.

GRADE Use in Evidence Syntheses Published in High-Impact-Factor Gynecology and Obstetrics Journals: A Methodological Survey

Objective: To identify and describe the certainty of evidence of gynecology and obstetrics systematic reviews (SRs) using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach. Method: Database searches of SRs using GRADE, published between 1 January 2016 to 31 December 2020, in the 10 "gynecology and obstetrics" journals with the highest impact factor, according to the Journal Citation Report 2019. Selected studies included those SRs using the GRADE approach, used to determine the certainty of evidence. Results: Out of 952 SRs, ninety-six SRs of randomized control trials (RCTs) and/or nonrandomized studies (NRSs) used GRADE. Sixty-seven SRs (7.04%) rated the certainty of evidence for specific outcomes. In total, we identified 946 certainty of evidence outcome ratings (n = 614 RCT ratings), ranging from very-low (42.28%) to low (28.44%), moderate (17.65%), and high (11.63%). High and very low certainty of evidence ratings accounted for 2.16% and 71.60% in the SRs of NRSs, respectively, compared with 16.78% and 26.55% in the SRs of RCTs. In the SRs of RCTs and NRSs, certainty of evidence was mainly downgraded due to imprecision and bias risks. Conclusions: More attention needs to be paid to strengthening GRADE acceptance and building knowledge of GRADE methods in gynecology and obstetrics evidence synthesis.

Surgical Treatment of Deep Endometriosis

In deep endometriosis (DE), clusters of endometrium-like cells penetrate more than 5 mm below the peritoneum: The affected organs and tissue structures can eventuate in an alteration of the anatomy with eliminated organ boundaries, which in some cases can pose a real surgical challenge, even for experienced surgeons. A comprehensive description of the different manifestations of the disease can be found in the #Enzian classification. Since the operation is usually the foundation for the successful treatment of DE, what is important are conclusive indications, appropriate preoperative preparation and, above all, appropriate experience on the part of the surgical team. This article aims to provide a review of the surgical options that are currently available.

Endometriosis: A multimodal imaging review

Endometriosis is a chronic inflammatory disorder characterized endometrial-like tissue present outside of the uterus, affecting approximately 10% of reproductive age women. It is associated with abdomino-pelvic pain, infertility and other non - gynecologic symptoms, making it a challenging diagnosis. Several guidelines have been developed by different international societies to diagnose and classify endometriosis, yet areas of controversy and uncertainty remains. Transvaginal ultrasound (TV-US) is the first-line imaging modality used to identify endometriosis due to its accessibility and cost-efficacy. Enhanced sonographic techniques are emerging as a dedicated technique to evaluate deep infiltrating endometriosis (DIE), depending on the expertise of the sonographer as well as the location of the lesions. MRI is an ideal complementary modality to ultrasonography for pre-operative planning as it allows for a larger field-of-view when required and it has high levels of reproducibility and tolerability. Typically, endometriotic lesions appear hypoechoic on ultrasonography. On MRI, classical features include DIE T2 hypointensity, endometrioma T2 hypointensity and T1 hyperintensity, while superficial peritoneal endometriosis (SPE) is described as a small focus of T1 hyperintensity. Imaging has become a critical tool in the diagnosis, surveillance and surgical planning of endometriosis. This literature review is based mostly on studies from the last two decades and aims to provide a detailed overview of the imaging features of endometriosis as well as the advances and usefulness of different imaging modalities for this condition.

Ultrasonographic Findings Indirectly Predicting Parametrial Involvement in Patients with Deep Endometriosis: The ULTRA-PARAMETRENDO I Study

STUDY OBJECTIVE

To evaluate ultrasonographic findings as a first-line imaging tool to indirectly predict the presence of parametrial endometriosis (PE) in women with suspected deep endometriosis (DE) undergoing surgery.

DESIGN

Retrospective analysis of a prospectively collected database (ULTRA-PARAMETRENDO I study; NCT05239871).

SETTING

Referral center for DE.

PATIENTS

Consecutive patients undergoing laparoscopic surgery for DE.

INTERVENTIONS

Preoperative transvaginal ultrasonography was done according to the International Deep Endometriosis Analysis consensus statement. A stepwise forward regression analysis was performed considering the simultaneous presence of DE nodules and the following ultrasonographic indirect signs of DE: diffuse adenomyosis, endometriomas, ovary fixed to the lateral pelvic wall or the uterine wall, absence of anterior/posterior sliding sign, and hydronephrosis. The gold standard for the presence of PE was surgery with histologic confirmation.

MEASUREMENTS AND MAIN RESULTS

Of 1079 patients, 212 had a surgical diagnosis of PE (left: 18.5%; right: 17.0%; bilateral: 15.9%). The obtained prediction model (χ² = 222.530; p <.001) for PE included, as independent indirect DE signs presence of hydronephrosis (odds ratio [OR] = 14.5; p = .002), complete absence of posterior sliding sign (OR = 3.3; p <.001), presence of multiple endometriomas per ovary (OR = 3.0; p = .001), and ovary fixation to the uterine wall (OR = 2.4; p <.001); as independent concomitant DE nodules, presence of uterosacral nodules with the largest diameter >10 mm (OR = 3.2; p <.001), presence of rectal endometriosis with the largest diameter >25 mm (OR = 2.3; p = .004), and rectovaginal septum infiltration (OR = 2.3; p = .003). The optimal diagnostic balance was obtained considering at least 2 concomitant DE nodules and at least 1 indirect DE sign (area under the curve 0.75; 95% confidence interval, 0.72-0.79).

CONCLUSION

Specific indirect ultrasonographic findings should raise suspicion of PE in women undergoing preoperative assessment for DE. The suspicion of parametrial invasion may be critical to address patients to expert leading centers, where proper diagnosis and surgical treatment for PE can be performed.

Ureteral Endometriosis Presenting As Left Ureteral Obstruction: A Case Report

Ureteral endometriosis is a very rare but serious form of infiltrating endometriosis since the risk of urinary tract obstruction and secondary loss of renal function exists. Although not always possible, the clinical and radiologic assessment may help in obtaining a preoperative diagnosis.

We report the case of a 42-year-old woman with left ureteral endometriosis, revealed by left flank pain. Imaging revealed left obstructive uropathy with an endometriotic cyst of the left ovary and a spiculated lesion of the left parametrium. She underwent laparotomy, resection of the diseased ureter with primary re-anastomosis, resection of a left parametrial lesion and an endometriotic left ovarian cystectomy. The pathological assessment confirmed the diagnosis of ureteral endometriosis. Follow-up of the patient showed complete resolution with a stable, normal kidney function.

In conclusion, ureteral endometriosis involvement is infrequent but should be included in the differential diagnosis in a premenopausal woman with ureteral obstruction of unknown cause. An early diagnosis and obstruction relief are critical to a successful outcome.

Surgeons' workload assessment during indocyanine-assisted deep endometriosis surgery using the surgery task load index: The impact of the learning curve

Objective

Assess the surgeons' workload during deep endometriosis surgery after ureteral ICG

Design

Prospective, consecutive, comparative, single-center study

Population

41 patients enrolled to deep endometriosis surgery with ureteral ICG from January 2019 to July 2021 at La Paz University Hospital

Methods

Patients were divided into 2 groups: patients operated during the learning curve of ureteral ICG instillation and patients operated after the technique was implemented and routinely performed. After surgery, the SURG-TLX form was completed by the surgeons. We evaluated whether a workload reduction occurred.

Main outcomes measures

Surgeon's workload was measured using the SURG-TLX form, obtaining the total workload and 6 different dimensions (distractions, temporal demands, task complexity, mental demands, situational stress and physical demands)

Results

A significant positive correlation was found between surgical complexity and situational stress (p = 0.04). Mental demands (p = 0.021), physical demands (p = 0.03), and total workload (p = 0.025) were significantly lower when the technique was routinely performed. The mental demand, physical demands, and total workload perceived by the surgeons at the beginning of the implementation was higher (68 [39–72], 27 [11–46.5], 229 [163–240], respectively) than in the latter ones (40 [9–63], 11.5 [0–32.8], 152 [133.3–213.8], respectively). Distractions appeared to be higher in the latter surgeries (8.5 [0–27.8]) than in the first surgeries (0 [0–7]; p = 0.057).

Conclusions

Ureter ICG instillation prior to DE surgery significantly reduces the mental and physical demands and total workload of the surgeons in DE surgeries after overcoming the learning curve. Distractions appear to increase as surgical stress decreases.

The analysis of the prevalence of extragenital pathology in infertile women with external genital endometriosis

Background. External genital endometriosis (EGE) is often the cause of infertility, while coagulation of its foci leads to the restoration of fertility. Often, non-invasive

preoperative diagnosis of EGE is difficult. Today, the issue of laparoscopy in infertility and whether there is a need for additional indications for its implementation remains controversial. Identification of the relationship between certain extragenital diseases with EGE is promising in terms of both understanding the pathogenesis of EGE and predicting its development.

The aim. Identification of the relationship of extragenital diseases with the presence of EGE in infertile women of reproductive age.

Materials and methods. In preparation for assisted reproductive technology programs at the Vitromed Clinic, 1 132 women of reproductive age were examined from 2019 to 2021. Collection and processing of clinical and anamnestic data were carried out. The diagnosis of EGE was verified by laparoscopy with histological examination. The results were analyzed using exact test and binary logistic regression to build a model of the relationship between EGE and somatic pathology.

Results. EGE was detected in 222 patients. A number of somatic diseases were found that are most common in EGE: bowel diseases; minor cardiac maldevelopments; chronic anemia; pathology of the pancreas; chronic tonsillitis; allergy. A logistic regression model was constructed to predict the presence of EGE in patients with the indicated somatic pathology with a sensitivity of 81.53 % and a specificity of 97.25 %.

Conclusion. Identification of comorbid extragenital diseases associated with EGE in women with infertility can serve as a basis for expanding the scope of therapeutic and diagnostic measures, in particular for laparoscopy.

Accuracy of transvaginal ultrasound and magnetic resonance imaging for diagnosis of deep endometriosis in bladder and ureter: a meta-analysis

This meta-analysis aimed to determine the accuracy of transvaginal ultrasound (TVS) and pelvic magnetic resonance imaging (MRI) in diagnosing urinary tract endometriosis (UTE). A comprehensive search of the Pubmed and Embase was conducted between January 1989 and June 2020. Studies that described the accuracy of MRI or TVS for the diagnosis of UTE using surgical data as the reference standard were included. Of the 913 citations identified, 23 studies were analysed. For detection of endometriosis in bladder endometriosis (BE), the overall pooled sensitivities of TVS and MRI were 72% and 68% respectively, and their specificities were 99% and 100% respectively. For detection of endometriosis in the ureteral endometriosis (UE), the overall pooled sensitivities of TVS and MRI were 97% and 87% respectively, and their specificities were both 100%. In conclusion, both TVS and MRI provide good accuracy with specific strong points in diagnosing UTE and seem useful first-line methods from a clinical perspective. Besides, pelvic MRI and TVS are more accurate for predicting UTE localised in the ureter than bladder, especially in terms of sensitivity.IMPACT STATEMENTWhat is already known on this subject? Previous studies have confirmed high diagnostic value of transvaginal ultrasound (TVS) and magnetic resonance imaging (MRI) on bladder endometriosis (BE) respectively. However, high heterogeneity was found for both sensitivity and specificity and no meta-analysis has yet been performed to test the diagnostic value of TVS and MRI for ureteral endometriosis (UE).What the results of this study add? In this meta-analysis, we firstly confirmed high diagnostic value of TVS and MRI on UE respectively. For detection of UE, the overall pooled sensitivities of TVS and MRI were 97% and 87% respectively, and their specificities were both 100%.What the implications are of these findings for clinical practice and/or further research? Early preoperative diagnosis and accurate understanding of the widespread distribution of endometriosis are prerequisites for radical surgical in UTE. In the present study, we updated the previous results on the accuracy of TVS and MRI for the diagnosis of BE and firstly confirmed high diagnostic value of TVS and MRI on UE. Both TVS and MRI provide good accuracy with specific strong points in diagnosing UTE and seem useful first-line methods from a clinical perspective.

Reproductive and postsurgical outcomes of infertile women with deep infiltrating endometriosis

Background

This study aimed to summarize and analyze clinical characteristics and reproductive outcomes in postoperative deep infiltrating endometriosis (DIE).

Methods

This retrospective cohort study included 55 reproductive-aged patients who were diagnosed with DIE, wished to conceive and underwent resection surgery at the Obstetrics and Gynecology Hospital, Fudan University, from January 2009–June 2017. Those with any plausible infertility factor or abnormalities in the partner’s semen analysis were excluded. Patient characteristics, preoperative symptoms, infertility history, intraoperative findings and reproductive outcomes were followed up and recorded. Risk factors for reproductive outcomes were identified for women who became pregnant versus those who did not by univariate logistic regression. Additionally, pre- and postoperative endometriosis health profile questionnaire-30 (EHP-30), Knowles–Eccersley–Scott Symptom questionnaire (KESS), Cox Menstrual Symptom Scale (CMSS) and Female Sexual Function Index (FSFI) scores were used to evaluate the effect of DIE surgery on quality of life.

Results

The average age was 30.22 ± 3.62 years, with no difference between the pregnancy and nonpregnancy groups. The average follow-up time was 26.57 ± 14.51 months. There were 34 pregnancies (61.82%): 24 (70.59%) conceived spontaneously and 10 (29.41%) by in vitro fertilization (IVF). Twenty-eight patients (82.35%) had term deliveries. The interval between operation and pregnancy was 10.33 ± 5.6 (1–26) months. Univariate analysis showed that a lower endometriosis fertility index (EFI) score (EFI < 8) was a risk factor for infertility (OR: 3.17 (1.15–10.14), p = .044). For patients with incomplete surgery, postoperative gonadotropin-releasing hormone agonist (GnRHa) administration improved the pregnancy rate (p < 0.05). Regarding quality of life, there was significant improvement (p < 0.05) in the postoperative EHP-30, KESS and CMSS scores compared with preoperative scores in both groups. Although there was no obvious difference in FSFI scores, significant improvement in dyspareunia was observed (p < 0.05).

Conclusions

Overall, the postoperative pregnancy rate of DIE patients was 61.82%. Surgical management of DIE for patients with complaints of pain and with pregnancy intentions was feasible and effective. Long-term expectant treatment should not be advised for patients with lower EFI scores (EFI < 8), and postoperative IVF–ET may be a good choice. More cases should be enrolled for further study, and randomized studies are required.

Rate of recurrent hydronephrosis after laparoscopic ureteroneocystostomy for ureteral endometriosis

STUDY OBJECTIVE

To investigate the short-term outcomes of laparoscopic ureteroneocystostomy in patients with ureteral endometriosis (UE).

DESIGN

Retrospective cohort study of consecutive patients who underwent surgery for the ureter endometriosis with hydronephrosis.

SETTING

A private hospital that provide primary, secondary and tertiary care.

PATIENTS

30 consecutive patients with UE who underwent laparoscopic ureteroneocystostomy at our institution between May 2008 and April 2020.

INTERVENTIONS

Laparoscopic ureteroneocystostomy, if necessary, hysterectomy, salpingo-oophorectomy, cystectomy, partial bladder resection, or partial bowel resection were performed.

MEASUREMENTS AND MAIN RESULTS

The most common chief complaint was pelvic pain (40%). Endometriosis affected only the left ureter in 56.7% of patients, only the right ureter in 33.3%, and both ureters in 6.7%. Involvement of the ipsilateral ovary was confirmed in 64.3%. The most frequent location of UE was 1-3 cm above the UVJ (46.7%). A psoas hitch was performed in 7 patients (23.3%), and the Boari flap was used in 9 patients (30%). Hysterectomy was performed in 12 patients (40%), and 6 of them had a concomitant bilateral salpingo-oophorectomy (20%). In addition, 3 patients (10%) underwent partial bowel resection, and 2 patients (6.7%) underwent partial bladder resection. After surgery, 24 of 27 patients (80.0%) were free of sever hydronephrosis after surgery. Hydronephrosis recurred in a single patient (3.3%), but the grade of hydronephrosis improved significantly after surgery (P < 0.001). At 6 months of follow up, 4 patients (13.3%) experienced urinary tract infections and 2 patients (6.7%) reported dysuria. Patients reported a regression of dysmenorrhea symptoms (P < 0.001).

CONCLUSION

This study shows that ureteroneocystostomy provides good results in terms of relapses and symptom control in patients with ureteral endometriosis.

Effect of laparoscopic cystectomy on ovarian reserve in patients with ovarian cyst

OBJECTIVE

This study aimed to evaluate the effect of laparoscopic cystectomy on ovarian reserve in patients with ovarian cysts.

MATERIAL AND METHODS

This prospective study was performed on 113 women with ovarian cysts in a tertiary referral teaching hospital. All patients underwent laparoscopic cystectomy. Serum levels of antimüllerian hormone (AMH) were measured pre-and, 3 months postoperatively. The primary outcome of the study was to assess the effect of laparoscopic cystectomy on ovarian reserve based on alterations in serum AMH levels. The secondary outcome of the present study was to evaluate the impact of the number of cauterizations, size and type of cysts, bilaterality (bilateral or unilateral), age, and body mass index (BMI) on the ovarian reserve after laparoscopic excision.

RESULTS

Laparoscopic cystectomy reduced the serum AMH levels preoperatively (1.32 ± 4.48 ng/ml) to postoperatively (3.2 ± 1.93 ng/ml) and the difference (- 1.28 ng/ml) was statistically different (0.001 >P). There was a negative significant relationship between the number of cauterizations used and postoperative serum AMH levels (p ≤ 0.001). There was a significant relationship between the location (p ≤ 0.01), type of cyst (p ≤ 0.001) and the serum AMH levels reduction.

CONCLUSION

The number of cauterizations used during surgery, the type of cyst, and bilaterality can affect AMH levels that need to be addressed.

Periureteral liposarcoma causes of hydroureter and hydronephrosis: An unpredictable diagnosis

When obstructive lesions from the uterus or ovaries are suspected, patients with hydronephrosis are usually referred to a gynecologist. Here, a case of suspected endometriosis-related hydroureteronephrosis is reported. A 43-year-old woman with hydronephrosis was found to have a left distal periureteral tumor on the computerized tomography scan. Before the operation, the hydroureteronephrosis was suspected caused by the obstruction of ureter, related with ureteral endometriosis; however, the postoperative pathology revealed the diagnosis of retroperitoneal well-differentiated liposarcoma. When female patients have hydronephrosis, gynecologic causes should be considered. Both benign and malignant causes are needed to include when making differential diagnosis. Therefore, robot-assisted surgery is a feasible option because of its lower morbidity rate and more precise dissection of soft tissue than laparotomy in both benign and malignant retroperitoneal tumors.

Preoperative ureteral stenting in women with deep posterior endometriosis and ureteral involvement: Is it useful?

OBJECTIVE

Systematic placement of a ureteral stent before surgery for posterior deep infiltrating endometriosis (DIE) was previously recommended, but it could increase perioperative complications. We evaluate the role of preoperative ureteral stent in women requiring surgery for ureteral involvement (UI) with large posterior DIE nodules and/or grade I-II hydronephrosis.

METHODS

Women undergoing minimally invasive surgery for DIE with UI having posterior nodules >3 cm and/or grade I-II hydronephrosis from 2014 to 2019 were retrospectively included. We progressively changed our strategy from a systematic pre-operative stent insertion (S-PS, up to 2016) to a non-systematic one (NS-PS, from 2016).

RESULTS

Eighty-eight women in the S-PS group and 96 in the NS-PS were included. Low urinary tract infections (UTI) were higher in the S-PS group (13.6% vs 2.1%, P = 0.003). Hospital stay was longer in women with S-PS (9.8 ± 5.3 days vs 6.7 ± 2.5 days, P < 0.001). Logistic regression analysis confirmed a significant association between NS-PS and low UTI (adjusted OR 0.20, 95% CI 0.05-0.81, P = 0.024).

CONCLUSION

Systematic placement of a ureteral stent before surgery in women requiring surgery does not reduce overall perioperative complication rate, but it is associated with a longer duration of hospitalization and a higher low UTI rate.

[S2k guidelines for the diagnosis and treatment of endometriosis-Recommendations for pathology]

Die vorliegende Übersicht fasst die relevanten Aspekte der S2k-Leitlinie Endometriose zusammen. Die Empfehlungen umfassen die Aufarbeitung und Befunderhebung bei Biopsien und Resektaten, die bei der klinischen Diagnose einer Endometriose entnommen wurden. Die Leitlinie berücksichtigt neben praktischen Aspekten der Pathologie ebenso die klinischen Notwendigkeiten an die Histopathologie für eine optimale Diagnostik und Therapie der Patientinnen.

Basierend auf der in der pathologischen Literatur gebräuchlichsten Definition der Endometriose des Corpus uteri (Adenomyosis uteri) wurde diese in der Leitlinie definiert als der Nachweis des Endometrioseherdes im Myometrium in einem Abstand zur endomyometranen Grenze von einem mittelgroßen Gesichtsfeld (100fache Vergrößerung), was metrisch rund 2,5 mm entspricht. Bei Darmresektaten soll zum Status der Resektionsränder Stellung genommen werden.

Ebenso definiert werden Anforderungen im Kontext endometrioseassoziierter Karzinome (z. B. Hormonrezeptorbestimmungen, immunhistochemische Untersuchung auf Ausfall der DNA-Mismatch-Reparaturproteine).

Isolated Intrinsic Ureteral Endometriosis: A Rare Presentation of Ureteral Obstruction

Intrinsic ureteral endometriosis is a very rare presentation of deep infiltrating endometriosis. It can lead to urinary tract obstruction and loss of renal function. Clinical suspicion and radiologic assessment can aid in preoperative diagnosis and help plan surgical treatment. Herein we report a case of a 29-year-old female who presented with left-sided pelvic and flank pain. Imaging revealed left obstructive uropathy and a left ureteral mass. She underwent laparotomy and resection of the diseased ureter with primary re-anastomosis. Histology confirmed intrinsic ureteral endometriosis. There was subsequently complete resolution on follow-up imaging, with no permanent loss of renal function.

Linzagolix: a new GnRH-antagonist under investigation for the treatment of endometriosis and uterine myomas

INTRODUCTION

Uterine myomas and endometriosis are benign hormone-dependent diseases affecting women of reproductive age. Substantial efforts have been made to develop innovative medical options for treating these gynecologic diseases. Elagolix and relugolix have been approved in some countries for treating endometriosis and myomas, respectively; however, linzagolix (OBE 2109, KLH 2109) is a new oral gonadotropin-releasing hormone (GnRH) antagonist in phase II-III trials. Treatment options for women with contraindications for hormonal therapies or who refuse particular options, are the driving force behind the development of new drugs in this area.

AREA COVERED

This drug evaluation highlights definitive and preliminary results from previous and ongoing studies of linzagolix for the treatment of endometriosis and myomas.

EXPERT OPINION

Linzagolix showed a dose-dependent and rapidly reversible action on the pituitary-gonadal axis. In a recent phase II trial (EDELWEISS), linzagolix significantly reduced pain related to endometriosis and improved quality of life at single daily doses of 75-200 mg. The preliminary results of international, double-blind phase III trials (PRIMROSE 1 and 2) reported its efficacy in treating heavy menstrual bleeding related to myomas with a good safety profile. Further studies will determine the necessity of add-back therapy during long-term use of linzagolix.

Combination of Ferulic Acid, Ligustrazine and Tetrahydropalmatine attenuates Epithelial-mesenchymal Transformation via Wnt/β-catenin Pathway in Endometriosis

Previously the potential therapeutic action of ferulic acid, ligustrazine and tetrahydropalmatine (FLT) are discovered with unclear mechanism in rat autograft endometriosis. However, the effect of FLT on endometrial cells and allograft endometriosis is still unclear. This study is designed to elucidate the influence of FLT on epithelial-mesenchymal transformation in allograft endometriosis and endometrium cells. In vivo, fluorescent xenogeneic endometriosis model was established. In vitro, invasion and metastasis were analyzed after treating FLT. Epithelial-mesenchymal transformation and Wnt/β-catenin pathway were inspected in vitro and in vivo. Activator or inhibitor of Wnt/β-catenin signaling was performed to inspect mechanism of epithelial-mesenchymal transformation. In vivo, FLT not only decreased fluorescent intensity and volume of ectopic lesion, but also ameliorated pathological morphology. E₂ and PROG levels in serum were reduced by FLT. In endometrial cells, FLT significantly inhibited the invasion and metastasis. Meantime, epithelial-mesenchymal transformation was reversed, accompanied by suppression of Wnt/β-catenin pathway. In-depth study, activation of Wnt/β-catenin pathway lead to promotion of epithelial-mesenchymal transformation, which was reversed by FLT. FLT prevented fluorescent allograft endometriosis and endometrium cells, which was related to suppress epithelial-mesenchymal transformation through inactivating Wnt/β-catenin pathway. The findings disclose molecular mechanism of epithelial-mesenchymal transformation in endometriosis by FLT, and contribute to further application.

Clinical characteristics and surgical treatment of ureteral endometriosis: our experience with 40 cases

Background

To present the experience with the surgical management of ureteral endometriosis (UE) in our single center.

Methods

To present the experience with the surgical management of ureteral endometriosis (UE) in our single center. A retrospective analysis of 40 patients with UE who presented with intraoperative surgical findings of endometriosis involving the ureter and pathology-proven UE was performed.

Results

Forty patients (median age, 42.5 years) with histological evidence of UE were included. Six (15%) patients had a history of endometriosis. Twenty-one (52%) patients had urological symptoms, and 19 (48%) patients were asymptomatic. All patients had hydronephrosis. The mean glomerular filtration rate (GFR) of the ipsilateral kidney was significantly worse than that of the contralateral kidney (23.4 vs 54.9 ml/min; P < 0.001). Twelve (30%) patients were treated with ureteroureterostomy (11 open approaches and 1 robotic approach). Twenty-two (55%) patients underwent ureteroneocystostomy (17 open approaches, 4 laparoscopic approaches and 1 robotic approach). Five patients underwent nephroureterectomy. One patient refused aggressive surgery and received ureteroscopic biopsy and ureteral stent placement. Thirteen (33%) patients required gynecological operations. Three (8%) patients in the open group suffered from major surgical complications. Nine (24%) patients received postoperative endocrine therapy. Twenty-eight (70%) patients were followed up (median follow-up time, 71 months). Twenty-four patients received kidney-sparing surgeries. The success rate for these 24 patients was 21/24 (87.5%). The success rates of ureteroneocystostomy and ureteroureterostomy were 15/16 (93.8%) and 5/7 (71.4%), respectively.

Conclusions

Although UE is rare, we should remain vigilant for the disease among female patients with silent hydronephrosis. Typically, a multidisciplinary surgical team is necessary. For patients with severe UE, segmental ureteral resection with ureteroureterostomy (UU) or ureteroneocystostomy may be a preferred choice.

Ureteral endometriosis, the hidden enemy: multivariable fractional polynomial approach for evaluation of preoperative risk factors in the absence of ureteral dilation

OBJECTIVE

To determine whether it is possible to predict the risk of ureteral endometriosis (UE) using a mathematical model based on preoperative findings.

DESIGN

Prospective observational study conducted between January 2017 and April 2020.

SETTING

Tertiary-level academic referral center.

PATIENT(S)

Three hundred consecutive women of reproductive age with a diagnosis of posterior deep infiltrating endometriosis (DIE) scheduled for laparoscopic surgery.

INTERVENTION(S)

Before surgery, anamnestic data and the severity of endometriosis-related symptoms were evaluated, and all patients underwent a complete gynecological examination. Transvaginal and transabdominal ultrasound were performed to map the endometriotic lesion. Ureteral involvement was surgically and histologically confirmed.

MAIN OUTCOME MEASURE(S)

To select important risk factors for UE and determine a suitable functional form for continuous predictors, we used the multivariable fractional polynomial.

RESULTS

UE was surgically found in 145 women (48.3%). Based on our multivariable polynomial mathematical model, UE was significantly associated with adenomyosis, parametrial involvement, and previous surgery for endometriosis. A posterior DIE nodule with a transverse diameter >1.8 cm was associated with a higher probability of ureteral involvement.

CONCLUSIONS

Posterior DIE nodule with a transverse diameter >1.8 cm, adenomyosis, parametrial involvement, and previous surgery for endometriosis appear to be good predictors of UE.

A case report of bladder and intestinal endometriosis, and the relationship between sex hormone receptor expression and PIK3CA mutation analysis

BACKGROUND

Extragonadal endometriosis is a rare condition, and its disease manifestation and long-term prognosis have not been elucidated. We report an extragonadal endometriosis case controlled by drug therapy for 14 years with analysis of the sex hormone receptor expression and PIK3CA mutation.

CASE PRESENTATION

The patient was diagnosed with bladder endometriosis at age of 30 years, and underwent bilateral nephrostomy and GnRHa therapy with add-back therapy. The patient was switched to dienogest therapy at age 35 and had hematuria and bloody stools at age 38. PET-CT revealed a 6-cm mass in the bladder with fluorodeoxyglucose accumulation and the diagnosis of endometriosis in the bladder, sigmoid colon, and cecum was confirmed after the biopsy result. The lesion's tubular structures were positive for the estrogen receptor, but only 30% positive for the progesterone receptor, and the H1047R mutation in PIK3CA was found in tubular structures of the bladder lesion. GnRHa therapy caused the tumors to shrink.

CONCLUSION

Decreased progesterone receptor expression and oncogenic mutations may influence the course of less common and rare site endometriosis. Rare site endometriosis often requires long-term hormone therapy, and management should be tailored to the patient's life stage, keeping in mind complications, such as decreased bone density.

Sonographic features of endometriosis infiltrating the lateral parametrium

OBJECTIVE

Lateral parametrium endometriosis (LPE) can be associated with infiltration of ureters and hypogastric plexus, causing severe painful symptoms and functional impairment, and requiring complex and extensive surgery. The aim of this study was to evaluate the presentation of LPE lesions at transvaginal ultrasound, identifying sonographic features for disease recognition and mapping.

METHODS

This was a retrospective case-series of women with sonographic suspect of LPE confirmed at surgical exploration. We carried out a descriptive analysis of the ultrasound patterns of presentation and compared the features of the lesions according to their location cranially or caudally to the uterine artery.

RESULTS

Our population included 23 women, with a total of 26 parametrial lesions: all of them were hypoechoic, with absence of vascularization. Lesions lying above the uterine artery presented more frequently as ill-defined nodules (78.6 %, p < 0.01) and were associated with ipsilateral reduced or absent ovarian mobility (92.9 %, p < 0.01); the ones located below the uterine artery appeared more frequently as fan-shaped lesions with retraction of the surrounding tissues (83.3 %). Ureteral involvement was observed at surgery in 43.5 % of cases. In all patients, deep infiltrating endometriosis of the posterior compartment was observed: the utero-sacral ligaments were the most common location affected concurrently.

CONCLUSIONS

LPE may present at transvaginal sonography as hypoechoic, not vascularized lesions, most frequently with a nodular or with a fan-shaped appearance, respectively cranially or caudally to the uterine artery. Reduced ovarian sliding and ureteral involvement are commonly associated.

Clear cell degeneration associated with endometriosis of abdominal wall after cesarean section: A case report and systematic review of literature

AIM

The scar of cesarean section (CS) is the most common site of abdominal wall endometriosis (AWE), whose tumor degeneration has been reported in an increasing number of cases; the most frequent histological type is clear cell carcinoma (CCC).

METHODS

We conducted a systematic research of the literature, collecting data regarding the evidence on tumor degeneration from AWE after CS. Moreover, we reported a case of clear cell borderline tumor (CCBT) originating from AWE.

RESULTS

We included data of 37 patients with diagnosis of CCC. The average time between the last CS and the diagnosis of CCC was around 15 years. Overall, 26.0% and 73.9% patients received exclusive local abdominal resection of the lesion and additional surgery, respectively. Lymph nodes involvement was detected in 26.0 % patients and adjuvant chemotherapy was administered in 52.0 % cases. During follow-up period, 15.2% patients died of disease, 32.6% had no evidence of disease, and 17.4% recurred. We diagnosed a CCBT arose in a patients with AWE and a personal history of several surgical procedures for endometriosis, a CS and a subsequent transverse laparotomy. We performed an open bilateral ovariectomy and a large excision of the endometriotic abdominal lesion.

CONCLUSION

Tumor degeneration from AWE seems to be a real occurrence with an increasing number of events. Considering the lack of risk factors and diagnostic instruments for tumor degeneration, the removal of AWE localization could be advisable, even though there was long average time between the trigger surgery and the tumor finding.

Fertility in patients with untreated rectosigmoid endometriosis

RESEARCH QUESTION

Several studies have investigated reproductive outcomes following surgical treatment of colorectal endometriosis, mainly segmental colorectal resection. This study examines pregnancy and live birth rates of women with rectosigmoid endometriosis not treated by surgery.

DESIGN

A retrospective analysis of data collected between May 2009 and January 2020 related to 215 women affected by rectosigmoid endometriosis wishing to conceive. Patients had a diagnosis of rectosigmoid endometriosis by transvaginal ultrasonography and magnetic resonance imaging enema. Patients with estimated bowel stenosis >70% at computed tomographic colonography and/or subocclusive/occlusive symptoms were excluded.

RESULTS

During the median length of follow-up of 31 months (range 13-63 months), the total pregnancy and live birth rates of the study population were 47.9% and 45.1%, respectively. Sixty-two women had a live birth after natural conception (28.8%; 95% confidence interval [CI] 22.8-35.6%) with a median time required to conceive of 10 months (range 2-34 months). Eighty-three women underwent infertility treatments (38.6%, 95% CI 32.1-45.5%); among these, 68 patients underwent IVF either directly (n = 51) or after intrauterine insemination (IUI) failure (n = 17). Time to conception was significantly higher in women having conceived by IVF than in those having conceived naturally (P < 0.001) or by IUI (P = 0.006). In patients undergoing IVF cycles, a worsening of some pain and intestinal symptoms was observed.

CONCLUSIONS

At median follow-up of 31 months, women with rectosigmoid endometriosis have a 48% pregnancy rate. However, these patients must be referred to centres specialized in managing endometriosis to properly assess symptoms and degree of bowel stenosis.

Ureter Visualization With Transvaginal Ultrasound: A Learning Curve Study

OBJECTIVES

To evaluate the learning curve of gynecologic surgical fellows (ie, in training) to properly identify the ureters in real time while simultaneously performing and interpreting transvaginal ultrasound (TVUS) examinations.

METHODS

We performed a prospective study, which took place at 2 centers in Sydney, Australia, from December 2017 to December 2018. Three fellows (F1-F3), of varying prestudy ultrasound (US) experience, were recruited to participate. One hundred fifty predetermined examinations were planned. A TVUS examination was performed by the study reference standard (an expert in gynecologic US). Subsequently, the fellows performed a focused component to identify bilateral ureters, having been blinded to the patient's clinical history and reference standard findings. Immediate feedback and hands-on teaching were provided after each of the fellow's evaluations were complete. To evaluate the number of scans needed to gain competency, the cumulative summation test for the learning curve was used.

RESULTS

A total of 150 examinations were performed on 145 patients. One patient had a single ureter, and 1 patient had US evidence of hydroureter. The cumulative summation test for the learning curve for bilateral ureter identification showed that F1 did not reach competency by 50 TVUS examinations, whereas F2 and F3 required 41 and 31 TVUS examinations to reach competency, respectively.

CONCLUSIONS

Contrary to other studies on the topic, this study suggests that although it is feasible for surgical fellows to learn TVUS identification of bilateral ureters, not all fellows can reach competency during a program based on a predefined number of scans. We advocate for an individualized, competency-based medical education model in learning US for identifying the ureters.