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Essam R Othman,1,2 Ayman Al-Hendy,3 Radwa Mostafa,1 Cornelis B Lambalk,2 Velja Mijatovic2 1OB-GYN Department, Assiut University, Assiut, 71515, Egypt; 2Academic Endometriosis Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; 3Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL, 60637, USACorrespondence: Essam R Othman, Department of Obstetrics and Gynecology, Assiut University, Assiut, Egypt, Email essamothman@aun.edu.egAbstract: Current medical treatment options for endometriosis associated pains are inadequate. Evidence on effects of nonsteroidal anti-inflammatory drugs is scarce. Around one third of patients are not responsive to oral contraceptives or progestins due to progesterone resistance. Gonadotropin-releasing hormone (GnRH) agonists can only be used for a short duration because of associated side effects. Oral GnRH antagonists, including elagolix, relugolix, and linzagolix allow oral administration, induce dose dependent reduction of estradiol levels, do not cause initial flare up of endometriosis symptoms, and allow the fast return of ovarian function and menstruation after discontinuation. Elagolix at a low dose of 150 mg once daily, or the higher dose of 200 mg twice daily, significantly increased the proportion of women achieving clinically meaningful decline of dysmenorrhea, noncyclic pelvic pain, and dyspareunia. Relugolix at an oral dose of 40 mg/day results in improvement in different forms of endometriosis related pelvic pain, with an efficacy and side effect profile similar to that of GnRH agonists. Adding 1 mg of estradiol and 0.5 mg of norethindrone to 40 mg of relugolix (relugolix combination therapy) allows extension of treatment to 24 weeks with maintained efficacy and an improved side effect profile. Linzagolix, in a dose of 75 mg/day, can be used alone to treat endometriosis associated pain. For severe pelvic pain and dyspareunia, linzagolix can be used in a high dose of 200 mg/day with hormonal add-back therapy to preserve bone health.Plain Language Summary: Oral gonadotropin-releasing hormone (GnRH) antagonists, including elagolix, relugolix, and linzagolix, represent a new addition in the armamentarium against endometriosis associated pain. They are given orally, do not cause an initial flare-up of disease symptoms, allow a return of menses quickly after their withdrawal and produce a balance between ability to relieve endometriosis associated pain and side effects profile. The addition of hormonal agents like estradiol 1 mg and norethindrone acetate 0.5 mg to relugolix (relugolix combination therapy) allowed longer use of the medication for relief of endometriosis associated pain while reducing side effects like bone mineral density loss and hot flushes.Keywords: endometriosis, pain, elagolix, relugolix, linzagolix, estradiol, norethindrone

Matthanja Bieze,1,2,* Annelotte Pauline van Haaps,3,4,* Leonardo Kapural,5 Sean Li,6 Kris Ferguson,7 Ralph de Vries,8 Michael E Schatman,9,10 Velja Mijatovic,3,4 Jan Willem Kallewaard1,11 1Department of Anesthesiology and Pain Management, Amsterdam UMC Location University of Amsterdam, Amsterdam, the Netherlands; 2Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; 3Department of Reproductive Medicine, Amsterdam University Medical Center location Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; 4Amsterdam Reproduction and Development, Amsterdam University Medical Centers, Amsterdam, the Netherlands; 5Carolina’s Pain Institute and Center for Clinical Research, Winston Salem, North Carolina, USA; 6National Spine and Pain Centers, Shrewsbury, New Jersey, USA; 7Aspirus Langlade Hospital Pain Clinic, Antigo, Wisconsin, USA; 8Medical Library, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; 9Department of Anesthesiology, Perioperative Care & Pain Medicine, NYU Grossman School of Medicine, New York, New York, USA; 10Department of Population Health – Division of Medical Ethics, NYU Grossman School of Medicine, New York, New York, USA; 11Department of Anesthesiology and Pain Management, Rijnstate Ziekenhuis, Arnhem, the Netherlands*These authors contributed equally to this workCorrespondence: Jan Willem Kallewaard, Department of Anaesthesiology and Pain Management, Amsterdam UMC location University of Amsterdam, Meibergdreef 9, Amsterdam, the Netherlands, Email j.w.kallewaard@amsterdamumc.nlAim: Visceral pain, characterized by pain that is diffuse and challenging to localize, occurs frequently and is difficult to treat. In cases where the pain becomes intractable despite optimal medical management, it can affect patients’ Quality of Life (QoL). Spinal Cord Stimulation (SCS) has emerged as a potential solution for intractable visceral pain.Purpose: In this narrative review, we collected all evidence regarding the efficacy of SCS for visceral pain across various underlying conditions.Methods: A comprehensive literature search was conducted in PubMed, Embase, and Web of Science in which articles published from October 1st, 1963 up to March 7th, 2023 were identified.Results: Seventy articles were included in this review of which most were retrospective cohort studies, case series and case reports. The studies, often with a small number of participants, reported on SCS for chronic pancreatitis, anorectal pain and bowel disorders, gynaecological diagnoses, visceral pelvic pain, urological disorders and finally general visceral pain. They found positive effects on pain and/or symptom relief, opioid consumption, anxiety and depression and QoL. Complications occurred frequently but were often minor and reversible.Conclusion: Better screening and selection criteria need to be established to optimally evaluate eligible patients who might benefit from SCS. A positive outcome of a sympathetic nerve block appears to be a potential indicator of SCS effectiveness. Additionally, women receiving SCS for endometriosis had a better outcome compared to other indications. Finally, SCS could also relief functional symptoms such as voiding problems and gastroparesis. Complications could often be resolved with revision surgery. Since SCS is expensive and not always covered by standard health insurance, the incorporation of cost-analyses is recommended. In order to establish a comprehensive treatment plan, including selection criteria for SCS, rigorous prospective, possibly randomized and controlled studies that are diagnosis-oriented, with substantial follow-up and adequate sample sizes, are needed.Keywords: neuromodulation, SCS, spinal cord stimulation, visceral pain, chronic pelvic pain, chronic pain

This article presents a systematic review and diagnostic test accuracy meta-analysis on the use of hysterosalpingography (HSG) and outpatient transvaginal hydrolaparoscopy (THL) for the diagnosis of tubal occlusion. The study included 9 studies on HSG and 3 studies on THL, assessing their sensitivity and specificity for double-sided and at least one-sided tubal occlusion. The results showed that THL is an accurate test for diagnosing tubal occlusion, while HSG is less sensitive but specific. The article provides valuable information for individuals researching infertility and tubal occlusion. [Extracted from the article]

This article presents a systematic review and diagnostic accuracy test meta-analysis on the use of sono-hysterosalpingography (sono-HSG) for the diagnosis of tubal occlusion. The study included 9 studies and found that sono-HSG is an accurate test for diagnosing tubal occlusion. The use of color Doppler was associated with higher specificity. The article provides valuable information for researchers and healthcare professionals working in the field of infertility and reproductive health. [Extracted from the article]

This article is a response to comments made by Dr. Bashir regarding a study on the effects of dietary interventions on pain and quality of life in women with endometriosis. The authors acknowledge that they did not investigate or exclude other self-management strategies such as CBD oil, yoga, and relaxation exercises, but their main focus was on dietary interventions. They found that yoga was inferior to dietary interventions for managing endometriosis symptoms. The study participants reported minimal use of yoga, Pilates, and CBD oil, so these factors were not included in the article. The authors also address concerns about the accuracy of participants' food diaries and suggest a balanced approach that includes both digital and non-digital tools for dietary interventions. They agree with Dr. Bashir's suggestion to involve the service industry in addressing barriers to dietary adherence. [Extracted from the article]

Study Question: Does hysterosalpingo-foam sonography (HyFoSy) prior to hysterosalpingography (HSG) or HSG prior to HyFoSy affect visible tubal patency when compared HSG or HyFoSy alone?, Summary Answer: Undergoing either HyFoSy or HSG prior to tubal patency testing by the alternative method does not demonstrate a significant difference in visible tubal patency when compared to HyFoSy or HSG alone., What Is Known Already: HyFoSy and HSG are two commonly used visual tubal patency tests with a high and comparable diagnostic accuracy for evaluating tubal patency. These tests may also improve fertility, although the underlying mechanism is still not fully understood. One of the hypotheses points to a dislodgment of mucus plugs that may have disrupted the patency of the Fallopian tubes., Study Design, Size, Duration: This is a secondary analysis of the randomized controlled FOAM study, in which women underwent tubal patency testing by HyFoSy and HSG, randomized for order of the procedure. Participants either had HyFoSy first and then HSG, or vice versa. Here, we evaluate the relative effectiveness of tubal patency testing by HyFoSy or HSG prior to the alternative tubal patency testing method on visible tubal patency, compared to each method alone., Participants/materials, Setting, Methods: Infertile women aged between 18 and 41 years scheduled for tubal patency testing were eligible for participating in the FOAM study. Women with anovulatory cycles, endometriosis, or with a partner with male infertility were excluded. To evaluate the effect HyFoSy on tubal patency, we relied on HSG results by comparing the proportion of women with bilateral tubal patency visible on HSG in those who underwent and who did not undergo HyFoSy prior to their HSG (HyFoSy prior to HSG versus HSG alone). To evaluate the effect of HSG on tubal patency, we relied on HyFoSy results by comparing the proportion of women with bilateral tubal patency visible on HyFoSy in those who underwent and who did not undergo HSG prior to their HyFoSy (HSG prior to HyFoSy versus HyFoSy alone)., Main Results and the Role of Chance: Between May 2015 and January 2019, we randomized 1160 women (576 underwent HyFoSy first followed by HSG, and 584 underwent HSG first followed by HyFoSy). Among the women randomized to HyFoSy prior to HSG, bilateral tubal patency was visible on HSG in 467/537 (87%) women, compared with 472/544 (87%) women who underwent HSG alone (risk difference 0.2%; 95% CI: -3.8% to 4.2%). Among the women randomized to HSG prior to HyFoSy, bilateral tubal patency was visible on HyFoSy in 394/471 (84%) women, compared with 428/486 (88%) women who underwent HyFoSy alone (risk difference -4.4%; 95% CI: -8.8% to 0.0%)., Limitations, Reasons for Caution: The results of this secondary analysis should be interpreted as exploratory and cannot be regarded as definitive evidence. Furthermore, it has to be noted that pregnancy outcomes were not considered in this analysis., Wider Implications of the Findings: Tubal patency testing by either HyFoSy or HSG, prior to the alternative tubal patency testing method does not significantly affect visible tubal patency, when compared to alternative method alone. This suggests that both methods may have comparable abilities to dislodge mucus plugs in the Fallopian tubes., Study Funding/competing Interest(s): The FOAM study was an investigator-initiated study, funded by ZonMw, a Dutch organization for Health Research and Development (project number 837001504). IQ Medical Ventures provided the ExEm®-FOAM kits free of charge. The funders had no role in study design, collection, analysis, or interpretation of the data. H.R.V. reports consultancy fees from Ferring. M.v.W. received a travel grant from Oxford University Press in the role of Deputy Editor for Human Reproduction and participates in a Data Safety and Monitoring Board as an independent methodologist in obstetrics studies in which she has no other role. M.v.W. is coordinating editor of Cochrane Fertility and Gynaecology. B.W.J.M. received an investigator grant from NHMRC (GNT1176437) and research funding from Merck KGaA. B.W.J.M. reports consultancy for Organon and Merck KGaA, and travel support from Merck KGaA. B.W.J.M. reports holding stocks of ObsEva. V.M. received research grants from Guerbet, Merck and Ferring and travel and speaker fees from Guerbet. The other authors do not report conflicts of interest., Trial Registration Number: International Clinical Trials Registry Platform No. NTR4746., (© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Human Reproduction and Embryology.)

Study Question: Does preconceptional exposure to oil-based iodinated contrast media during hysterosalpingography (HSG) impact children's neurodevelopment compared with exposure to water-based alternatives?, Summary Answer: Our study found no large-sized effects for neurodevelopment in children with preconceptional exposure to oil-based iodinated contrast media during HSG compared with water-based alternatives., What Is Known Already: HSG is widely used as a diagnostic tool in the female fertility work-up. Tubal flushing with oil-based iodinated contrast has been shown to enhance fertility outcomes in couples with unexplained infertility, increasing the chances of pregnancy and live birth compared with water-based alternatives. However, oil-based contrast contains higher doses of iodine and has a longer half-life, and concerns exist that iodinated contrast media can affect women's iodine status and cause temporary (sub)clinical hypothyroidism in mothers and/or foetuses. Considering that thyroid hormones are vital to embryonal and foetal brain development, oil-based contrast media use could increase the risk of impaired neurodevelopment in children conceived shortly after HSG. Here we examine neurodevelopmental outcomes in school-aged children conceived after HSG., Study Design, Size, Duration: This is a long-term follow-up of the H2Oil trial in which oil-based or water-based contrast was used during HSG (Netherlands; 2012-2014; NTR3270). Of 369 children born <6 months after HSG in the study, we contacted the mothers of 140 children who gave consent to be contacted for follow-up. The follow-up study took place from January to July 2022 (NCT05168228)., Participants/materials, Settings, Methods: The study included 69 children aged 6-9 years who were conceived after HSG with oil-based (n = 42) or water-based contrast (n = 27). The assessments targeted intelligence (Wechsler Intelligence Scale for Children), neurocognitive outcomes (computerized neurocognitive tests), behavioural functioning (parent and teacher questionnaires), and academic performance. Linear regression models, adjusted for age, sex, and parental educational attainment were employed to compare groups., Main Results and the Role of Chance: School-aged children born to mothers after oil-based contrast HSG did not significantly differ from children born to mothers after water-based contrast HSG, in regards to intelligence, neurocognitive functioning, behavioural functioning, or academic performance, with the exception of better performance for visuomotor integration functions in children exposed to oil-based contrast preconception. After exploratory correction for multiple comparisons, none of the group differences was statistically significant., Limitations, Reasons for Caution: The small sample size of this follow-up study limited statistical power. This study provides evidence for the absence of large-sized differences between preconceptional exposure to the two contrast media types but does not rule out more subtle effects on neurodevelopment compared to naturally conceived children without preconceptional exposure to HSG., Wider Implications of the Findings: This study contributes to our knowledge about the long-term effects of different types of iodinated contrast media used in fertility work-up, indicating that choosing oil-based over water-based iodinated contrast media is unlikely to have major effect on the long-term neurodevelopmental outcomes of children conceived shortly after HSG. However, further research should focus on the overall safety of iodine exposure during HSG, comparing children conceived after HSG to those conceived naturally as both types of contrast contain high amounts of iodine., Study Funding/competing Interest(s): The original H2Oil randomized controlled trial was an investigator-initiated study that was funded by the two academic hospitals now merged into the Amsterdam University Medical Centre. The current follow-up study (Neuro-H2Oil) is funded through a research grant awarded to the authors by the Amsterdam Reproduction & Development (AR&D) research institute. S.K. is funded by a AMC MD/PhD Scholarship from the Amsterdam UMC. S.K. reports holding voluntary roles in the civil society organizations Universities Allied for Essential Medicines and People's Health Movement. V.M. reports receiving travel and speaker fees as well as research grants from Guerbet, Merck and Ferring. K.D. reports receiving travel and speaker fees as well as research grants from Guerbet. BWM is supported by a NHMRC Investigator grant (GNT1176437) and reports consultancy, travel support and research funding from Merck, consultancy for Organon and Norgine, and holding stock from ObsEva. The other authors report no conflict of interest., Trial Registration Number: NCT05168228., (© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Human Reproduction and Embryology.)

Importance: Endometriosis is an inflammatory disease, with different forms of expression and a variety of complaints. An endometrioma, an ovarian cyst with endometrium-like lining, is one of the most common expressions of abdominal endometriosis. These endometriomas can, in addition to medical treatment, be treated surgically. After surgery, hormonal therapy is still frequently used, for treatment of endometriosis in general and prevention of recurrence of endometriomas specifically. However, not all women want or can receive postoperative hormonal treatment. It is important for this group to know the risk of anatomical recurrence of ovarian endometrioma after surgery for an endometrioma., Objective: To determine the recurrence rate for surgically treated endometrioma, without postoperative hormonal treatment., Data Sources: We performed a systematic literature review and meta-analyses, according to the PRISMA guidelines. MEDLINE, EMBASE, and the Cochrane Library were searched until May 2023. The literature search was limited to women with endometrioma who received surgical treatment without postoperative hormonal treatment., Study Selection and Synthesis: A distinction was made in study design including randomised controlled trials, cohort and retrospective studies. For assessment of risk of bias, the Cochrane Handbook for Systematic Reviews of Interventions and The Risk of Bias in Non-randomized Studies - of interventions assessment tool were used., Main Outcomes: Outcome measure included in this review is endometrioma recurrence., Results: We screened 5367 articles, of which ninety-seven articles were systematically reviewed and fifty-five included in this systematic review. Twelve of these were randomised controlled trials, eleven prospective cohort studies, and thirty-two retrospective studies. Nine randomised controlled trials (RCT's) were assigned as low risk of bias. For non-RCT's, only three studies had low risk of bias. Data of twenty-three studies were pooled in meta-analyses, performed for follow-up periods of 3, 6, 12 and 24 months. These studies showed a recurrence rate of 4%, 14%, 17% and 27% respectively., Conclusion: The meta-analysis, at 24 months after surgery the endometrioma recurrence rate showed a weighted average up to 27%., Relevance: With this study, we aimed to determine the recurrence rate of endometrioma after surgical treatment in women without postoperative hormonal treatment use. Recurrence rates were up to 27%., (Copyright © 2024. Published by Elsevier Inc.)

Objective: Uterine fibroids increase the risk of preterm birth. The current study highlights uterine fibroid necrosis as a possible cause of (extreme) preterm birth., Study Design: Retrospective cohort study in one Dutch academic hospital. Cases were selected from the 526 participants of the MyoFert study (Netherlands Trial Register, NL7990), which included patients who presented between 2004 and 2018 and were between the age of 18 and 45 years at the time of diagnosis of uterine fibroids. Of these participants, 414 women became pregnant. A retrospective chart review of the first pregnancies was performed. The main outcomes were (imminent) preterm birth and signs of fibroid necrosis on ultrasound. In women with signs of fibroid necrosis, the following data were collected systematically: fibroid characteristics, clinical presentation, pregnancy outcome, and postpartum period., Results: In total, 66 women had a preterm birth (16 %, 66/414), of which 25 pregnancies ended between 16 and <24 weeks (38 %, 25/66) and 41 pregnancies ended between 24 and <37 weeks of gestation (62 %, 41/66). Of all women with preterm birth and available ultrasound images, 15 % (7/48) had fibroid necrosis at the time of labour. These seven patients, supplemented with three patients with fibroid necrosis during their first pregnancy and at least one episode of imminent preterm birth, are described in more detail. In these ten patients, the fibroids increased substantially in size during the first and second trimester, leading to severe abdominal pain in all patients and hospital admission in seven patients. Ultrasound examination of the fibroids showed heterogenic changes and focal transonic areas in the fibroid, which are characteristics that indicate fibroid necrosis. In four patients, myomectomy was performed and necrosis was confirmed histologically., Conclusion: Fibroid necrosis during pregnancy is likely associated with (imminent) preterm birth. Clinicians are advised to structurally evaluate the myometrium in pregnancy, specifically in women presenting with abdominal pain in the second trimester., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)

Endometriosis is an estrogen-dependent chronic disease characterized by the presence of endometriumlike tissue outside the uterus and is often associated with symptoms, such as dysmenorrhea, dysuria, dyschezia, chronic pelvic pain, and infertility. Moreover, women diagnosed with endometriosis can report gastrointestinal symptoms, including bloating, constipation or diarrhea, and abdominal cramping, which can be associated with irritable bowel syndrome and can result in the misdiagnosis of endometriosis as irritable bowel syndrome at first. Treatment usually involves hormonal therapy, pain management, surgery, and/or assisted reproductive techniques in case of infertility. Nonetheless, these treatment methods can be insufficient for alleviating symptoms or can have unacceptable side effects, leading to noncompliance. Therefore, women often apply self-management strategies, including dietary interventions. One of the diets frequently suggested as a tool to manage endometriosis-related symptoms on social media and patient forums is a gluten-free diet. Although a gluten-free diet has been proven effective in managing nonceliac wheat sensitivity or celiac disease, its effectiveness in endometriosis remains uncertain. The Nurses' Health Study II found it unlikely that gluten intake was a strong factor in endometriosis etiology and symptomatology. To the best of our knowledge, the most frequently cited and sole published intervention study on the efficacy of a gluten-free diet for endometriosis has several important limiting factors, including the absence of a control group. In addition, gluten consumption is highly susceptible to a placebo effect and a nocebo effect, where women might experience symptom relief after eliminating gluten and return of symptoms after they consume gluten again, solely because they believe that gluten is bad for them. Despite the inverse association between body mass index and endometriosis and between a gluten-free diet and increased body mass index, this is an association, and no causality was proven. In addition, other factors should be taken into consideration. Of note, a gluten-free diet is expensive, has limited availability, and has a significant effect on quality of life. Moreover, without proper dietary guidance, it may adversely affect the gastrointestinal microbiome. Therefore, scientifically substantiated advice regarding the use of a gluten-free diet for endometriosis-related symptoms is currently not available, and a gluten-free diet should be discouraged unless there is an additional diagnosis of nonceliac wheat sensitivity or celiac disease., (© 2024 The Authors.)

Study Question: What are the costs and effects of tubal patency testing by hysterosalpingo-foam sonography (HyFoSy) compared to hysterosalpingography (HSG) in infertile women during the fertility work-up?, Summary Answer: During the fertility work-up, clinical management based on the test results of HyFoSy leads to slightly lower, though not statistically significant, live birth rates, at lower costs, compared to management based on HSG results., What Is Known Already: Traditionally, tubal patency testing during the fertility work-up is performed by HSG. The FOAM trial, formally a non-inferiority study, showed that management decisions based on the results of HyFoSy resulted in a comparable live birth rate at 12 months compared to HSG (46% versus 47%; difference -1.2%, 95% CI: -3.4% to 1.5%; P = 0.27). Compared to HSG, HyFoSy is associated with significantly less pain, it lacks ionizing radiation and exposure to iodinated contrast medium. Moreover, HyFoSy can be performed by a gynaecologist during a one-stop fertility work-up. To our knowledge, the costs of both strategies have never been compared., Study Design, Size, Duration: We performed an economic evaluation alongside the FOAM trial, a randomized multicenter study conducted in the Netherlands. Participating infertile women underwent, both HyFoSy and HSG, in a randomized order. The results of both tests were compared and women with discordant test results were randomly allocated to management based on the results of one of the tests. The follow-up period was twelve months., Participants/materials, Setting, Methods: We studied 1160 infertile women (18-41 years) scheduled for tubal patency testing. The primary outcome was ongoing pregnancy leading to live birth. The economic evaluation compared costs and effects of management based on either test within 12 months. We calculated incremental cost-effectiveness ratios (ICERs): the difference in total costs and chance of live birth. Data were analyzed using the intention to treat principle., Main Results and the Role of Chance: Between May 2015 and January 2019, 1026 of the 1160 women underwent both tubal tests and had data available: 747 women with concordant results (48% live births), 136 with inconclusive results (40% live births), and 143 with discordant results (41% had a live birth after management based on HyFoSy results versus 49% with live birth after management based on HSG results). When comparing the two strategies-management based on HyfoSy results versus HSG results-the estimated chance of live birth was 46% after HyFoSy versus 47% after HSG (difference -1.2%; 95% CI: -3.4% to 1.5%). For the procedures itself, HyFoSy cost €136 and HSG €280. When costs of additional fertility treatments were incorporated, the mean total costs per couple were €3307 for the HyFoSy strategy and €3427 for the HSG strategy (mean difference €-119; 95% CI: €-125 to €-114). So, while HyFoSy led to lower costs per couple, live birth rates were also slightly lower. The ICER was €10 042, meaning that by using HyFoSy instead of HSG we would save €10 042 per each additional live birth lost., Limitations, Reasons for Caution: When interpreting the results of this study, it needs to be considered that there was a considerable uncertainty around the ICER, and that the direct fertility enhancing effect of both tubal patency tests was not incorporated as women underwent both tubal patency tests in this study., Wider Implication of the Findings: Compared to clinical management based on HSG results, management guided by HyFoSy leads to slightly lower live birth rates (though not statistically significant) at lower costs, less pain, without ionizing radiation and iodinated contrast exposure. Further research on the comparison of the direct fertility-enhancing effect of both tubal patency tests is needed., Study Funding/competing Interest(s): FOAM trial was an investigator-initiated study, funded by ZonMw, a Dutch organization for Health Research and Development (project number 837001504). IQ Medical Ventures provided the ExEm®-FOAM kits free of charge. The funders had no role in study design, collection, analysis, and interpretation of the data. K.D. reports travel-and speakers fees from Guerbet and her department received research grants from Guerbet outside the submitted work. H.R.V. received consulting-and travel fee from Ferring. A.M.v.P. reports received consulting fee from DEKRA and fee for an expert meeting from Ferring, both outside the submitted work. C.H.d.K. received travel fee from Merck. F.J.M.B. received a grant from Merck and speakers fee from Besins Healthcare. F.J.M.B. is a member of the advisory board of Merck and Ferring. J.v.D. reported speakers fee from Ferring. J.S. reports a research agreement with Takeda and consultancy for Sanofi on MR of motility outside the submitted work. M.v.W. received a travel grant from Oxford Press in the role of deputy editor for Human Reproduction and participates in a DSMB as independent methodologist in obstetrics studies in which she has no other role. B.W.M. received an investigator grant from NHMRC GNT1176437. B.W.M. reports consultancy for ObsEva, Merck, Guerbet, iGenomix, and Merck KGaA and travel support from Merck KGaA. V.M. received research grants from Guerbet, Merck, and Ferring and travel and speakers fees from Guerbet. The other authors do not report conflicts of interest., Trial Registration Number: International Clinical Trials Registry Platform No. NTR4746., (© The Author(s) 2024. Published by Oxford University Press on behalf of European Society of Human Reproduction and Embryology.)

Competing Interests: KD reports travel- and speaker fees from Guerbet. VM reports grants and personal fees from Guerbet. BM reports consultancy for Guerbet and research funding from Merck and Guerbet. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.