Validation study of nonsurgical diagnosis of endometriosis

Do endometriomas induce an inflammatory reaction in nearby follicles?

STUDY QUESTION

Do endometriomas induce an inflammatory reaction with increased cytokine concentrations in nearby follicles and thereby affect follicular development during controlled ovarian stimulation for in vitro fertilization (IVF)?

SUMMARY ANSWER

With most endometriomas, there is no evidence of increased cytokine concentrations in the ipsilateral leading follicle. Infrequently, the concentration of inflammatory cytokines is increased in the follicular fluid (FF) and associated with diminished ovarian response.

WHAT IS KNOWN ALREADY

The link between peritoneal endometriosis, inflammation and infertility is well established; however, the association between intraovarian inflammation and endometrioma is unknown.

STUDY DESIGN, SIZE, DURATION

This prospective cohort study included 117 infertile women undergoing IVF in a tertiary infertility clinic at Oslo University Hospital Rikshospitalet, Norway, during the period May 2009 to September 2011.

PARTICIPANTS, SETTING, METHODS

There were 47 patients with unilateral endometrioma and 17 patients with bilateral endometrioma, while the 53 control patients had unexplained or male factor infertility. Concentrations of IL-1β, IL-6, IL-8, IL-10, IL-12 and TNF-α were measured in serum and in the fluid of the largest pre-ovulatory follicles from each ovary of each participant.

MAIN RESULTS AND THE ROLE OF CHANCE

Cytokine levels in the follicular fluid from the two ovaries in women with unilateral endometriomas were comparable, and were not significantly altered compared with that of control groups with male factor infertility, unexplained infertility or bilateral endometriomas. Compared with serum levels, the follicular fluid levels of IL-8 and IL-6 were higher, suggesting a local production or recruitment. The follicular fluid IL-8 level varied considerably and showed an inverse relationship with IL-12, IL-10 and TNF-∝, suggesting a complex interaction between various immune cells. A small group of patients (n = 3) had increased levels of all follicular fluid cytokines combined with moderately to slightly elevated serum levels and these patients had a significantly lower ovarian response.

LIMITATIONS, REASONS FOR CAUTION

For ethical reasons, the endometriomas were diagnosed indirectly by ultrasound rather than by histology.

WIDER IMPLICATIONS OF THE FINDINGS

This paper reveals that endometriomas seldom induce inflammation in nearby follicles during IVF; therefore, routine cystectomy prior to IVF may not be necessary. Cytokine levels in the follicular fluid, nonetheless, show distinctive patterns and increased levels may be linked to reduced ovarian response independent of the cause of infertility.

Endometriosis-associated pain syndrome: a nurse-led approach

Endometriosis is an enigmatic disease and its fundamental cause is still unknown. Endometriosis-associated pain syndrome is a common problem; it is underdiagnosed and patients suffering from the syndrome are rarely seen in specialist pain clinics. The correlation between the extent of the disease and pain is weak. Endometriosis-associated pain syndrome may be cyclical or persistent and the pain may radiate to other pelvic organs. Optimum treatment is timely intervention using a multidisciplinary approach.

Endometriosis in a rural remote setting: a cross-sectional study

Women in Western nations are exposed to an "unnatural" high number of menstrual cycles and this has been claimed to favour the development of endometriosis. If so, the prevalence of the disease should be low in remote rural settings characterized by high fertility rate, frequent teen-age pregnancy and protracted breast-feeding. To verify this hypothesis, we investigated the prevalence of endometriosis among women referring to the District Hospital of Aber, Northern Uganda for gynecological complaints. Subjects were considered affected if they had a history of surgery for endometriosis or if they had a positive clinical or ultrasound examination. Overall, a total of 528 gynecological consultancies were performed during the one year study period. Endometriosis was recorded in only one case. The frequency of the disease in the whole cohort of referred cases was thus 0.2% (95% confidence intervals (CI): 0.01-0.9%). When focusing on non-pregnant women in their reproductive age, it was 0.3% (95% CI: 0.01-1.3%). When considering women complaining symptoms suggestive for endometriosis, it was 0.4% (95% CI: 0.02-1.9%). In conclusion, endometriosis is rare in a community characterized by high fertility rate, frequent teen-age pregnancy and protracted breast-feeding, supporting the idea that the reproductive pattern plays a crucial role in the pathogenesis of the disease.

Developing symptom-based predictive models of endometriosis as a clinical screening tool: results from a multicenter study

OBJECTIVE

To generate and validate symptom-based models to predict endometriosis among symptomatic women prior to undergoing their first laparoscopy.

DESIGN

Prospective, observational, two-phase study, in which women completed a 25-item questionnaire prior to surgery.

SETTING

Nineteen hospitals in 13 countries.

PATIENT(S)

Symptomatic women (n = 1,396) scheduled for laparoscopy without a previous surgical diagnosis of endometriosis.

INTERVENTION(S)

None.

MAIN OUTCOME MEASURE(S)

Sensitivity and specificity of endometriosis diagnosis predicted by symptoms and patient characteristics from optimal models developed using multiple logistic regression analyses in one data set (phase I), and independently validated in a second data set (phase II) by receiver operating characteristic (ROC) curve analysis.

RESULT(S)

Three hundred sixty (46.7%) women in phase I and 364 (58.2%) in phase II were diagnosed with endometriosis at laparoscopy. Menstrual dyschezia (pain on opening bowels) and a history of benign ovarian cysts most strongly predicted both any and stage III and IV endometriosis in both phases. Prediction of any-stage endometriosis, although improved by ultrasound scan evidence of cyst/nodules, was relatively poor (area under the curve [AUC] = 68.3). Stage III and IV disease was predicted with good accuracy (AUC = 84.9, sensitivity of 82.3% and specificity 75.8% at an optimal cut-off of 0.24).

CONCLUSION(S)

Our symptom-based models predict any-stage endometriosis relatively poorly and stage III and IV disease with good accuracy. Predictive tools based on such models could help to prioritize women for surgical investigation in clinical practice and thus contribute to reducing time to diagnosis. We invite other researchers to validate the key models in additional populations.

Ultrasound for nurses in reproductive medicine

Nurses are in an ideal position to perform pelvic ultrasound evaluations, and appropriately trained nurses can perform limited ultrasound evaluations as part of the assessment and treatment of infertility. In this article, the author provides detailed descriptions and accompanying ultrasonic images illustrating the use of ultrasound in providing vital clinical information in reproductive medicine and in the assessment of the first trimester of pregnancy.

Endometriosis for the colorectal surgeon

Endometriosis is defined as the presence of endometrial glands and stroma outside the uterine cavity. Although the exact pathophysiology is unclear, endometriosis is a well-known cause of pelvic pain and infertility in reproductive-aged women. Endometriosis can have extrapelvic manifestations relevant for colorectal surgeons to appreciate, such as cyclic constipation, diarrhea, hematochezia, and dyschezia. The treatment of endometriosis involves a combination of medical and surgical interventions where close collaboration between the gynecologist and colorectal surgeon can help achieve prolonged periods of symptom remission.

Feasibility of 3.0T pelvic MR imaging in the evaluation of endometriosis

INTRODUCTION

Endometriosis represents an important clinical problem in women of reproductive age with high impact on quality of life, work productivity and health care management. The aim of this study is to define the role of 3T magnetom system MRI in the evaluation of endometriosis.

MATERIALS AND METHODS

Forty-six women, with transvaginal (TV) ultrasound examination positive for endometriosis, with pelvic pain, or infertile underwent an MR 3.0T examination with the following protocol: T2 weighted FRFSE HR sequences, T2 weighted FRFSE HR CUBE 3D sequences, T1 w FSE sequences, LAVA-flex sequences. Pelvic anatomy, macroscopic endometriosis implants, deep endometriosis implants, fallopian tube involvement, adhesions presence, fluid effusion in Douglas pouch, uterus and kidney pathologies or anomalies associated and sacral nervous routes were considered by two radiologists in consensus. Laparoscopy was considered the gold standard.

RESULTS

MRI imaging diagnosed deep endometriosis in 22/46 patients, endometriomas not associated to deep implants in 9/46 patients, 15/46 patients resulted negative for endometriosis, 11 of 22 patients with deep endometriosis reported ovarian endometriosis cyst. We obtained high percentages of sensibility (96.97%), specificity (100.00%), VPP (100.00%), VPN (92.86%).

CONCLUSION

Pelvic MRI performed with 3T system guarantees high spatial and contrast resolution, providing accurate information about endometriosis implants, with a good pre-surgery mapping of the lesions involving both bowels and bladder surface and recto-uterine ligaments.

Unoperated ovarian endometriomas and responsiveness to hyperstimulation

BACKGROUND

There is a growing consensus that ovarian reserve is reduced after surgical excision of ovarian endometriomas. However, it remains to be fully clarified whether this damage precedes or follows surgery. In order to further elucidate this aspect, we evaluated ovarian responsiveness to hyperstimulation in women selected for IVF with unilateral unoperated endometriomas. The main aim of this study was to compare the number of developing follicles in the affected ovary with that in the contralateral intact gonad as a control.

METHODS

Patients selected for IVF who were diagnosed with one or more monolateral endometriomas (diameter <4 cm) and who did not undergo previous ovarian surgery were retrospectively identified. We compared the number of follicles (diameter ≥ 11 mm) and the number of co-dominant follicles (diameter >15 mm) on the day of hCG administration in the affected and intact ovaries.

RESULTS

Among the 84 women selected, the median interquartile range (IQR) number of follicles ≥ 11 mm in the affected and intact ovaries was 5 (3-7) and 5 (3-8), respectively (P= 0.36). The median (IQR) number of co-dominant follicles in the affected and intact ovaries was 3 (2-4) and 3 (2-5), respectively (P= 0.48). The number of co-dominant follicles was lower in the affected ovary in 36 cases (43%, 95% confidence interval: 32-53%). We also failed to identify any statistically significant difference between the two ovaries when evaluating data according to the number of cysts, their dimension, the dose of gonadotrophins used or the number of oocytes retrieved.

CONCLUSIONS

In women selected for IVF, the presence of an endometrioma does not markedly affect responsiveness to hyperstimulation.

Transvaginal sonography vs. clinical examination in the preoperative diagnosis of deep infiltrating endometriosis

OBJECTIVE

The aim of this study was to compare the diagnostic performance of clinical vaginal examination with that of transvaginal sonography (TVS) in the presurgical diagnosis of deep infiltrating endometriosis.

METHODS

One-hundred and fifty-five women with symptoms suggestive of endometriosis were included. One-hundred and twenty-nine patients met the inclusion criteria and were prospectively and independently assessed by vaginal examination and TVS prior to a diagnostic laparoscopy and, where appropriate, radical resection and histological confirmation of endometriosis was performed. Sensitivity, specificity, positive predictive values (PPV), negative predictive values (NPV) and positive and negative likelihood ratios (LR+ and LR-) were calculated for each test method.

RESULTS

In total, 83 (64%) women had histological confirmation of endometriosis, 52 (40%) of whom had deep infiltrating endometriosis. The prevalence of endometriosis on the uterosacral ligaments, pouch of Douglas, vagina, bladder, rectovaginal space and rectosigmoid was 23.3%, 16.3%, 8.5%, 3.1%, 6.9% and 24%. PPV, NPV, LR+ and LR- for vaginal examination were 92%, 87%, 41.56 and 0.60 for ovarian endometriosis; 43%, 84%, 2.48 and 0.63 for uterosacral ligament disease; 64%, 95%, 9.14 and 0.26 for involvement of the pouch of Douglas; 80%, 97%, 42.91 and 0.28 for vaginal endometriosis; 78%, 98%, 46.67 and 0.23 for endometriosis of the rectovaginal space; 100%, 98%, 75.60 and 0.75 for bladder involvement; 86%, 84%, 18.97 and 0.63 for rectosigmoidal endometriosis. Values for TVS were similar with regard to vaginal and rectovaginal space endometriosis, but were clearly superior to vaginal examination in cases of ovarian (87%, 99%, 24.56 and 0.04), uterosacral ligament (91%, 90%, 31.35 and 0.37) and rectosigmoidal (97%, 97%, 88.51 and 0.1) endometriosis.

CONCLUSIONS

TVS is a more useful test than is vaginal examination in detecting endometriosis in the ovaries and rectosigmoid.

Diagnostic accuracy of transvaginal ultrasound for non-invasive diagnosis of bowel endometriosis: systematic review and meta-analysis

OBJECTIVE

To critically analyze the diagnostic value of transvaginal sonography (TVS) for non-invasive, presurgical detection of bowel endometriosis.

METHODS

MEDLINE (1966-2010) and EMBASE (1980-2010) databases were searched for relevant studies investigating the diagnostic accuracy of TVS for diagnosing deep infiltrating endometriosis involving the bowel. Diagnosis was established by laparoscopy and/or histopathological analysis. Likelihood ratios (LRs) were recalculated in addition to traditional measures of effectiveness.

RESULTS

Out of 188 papers, a total of 10 studies fulfilled predefined inclusion criteria involving 1106 patients with suspected endometriosis. The prevalence of bowel endometriosis varied from 24 to 73.3%. LR+ ranged from 4.8 to 48.56 and LR- ranged from 0.02 to 0.36, with wide confidence intervals. Pooled estimates of sensitivities and specificities were 91 and 98%; LR+ and LR- were 30.36 and 0.09; and positive and negative predictive values were 98 and 95%, respectively. Three of the studies used bowel preparations to enhance the visibility of the rectal wall; one study directly compared the use of water contrast vs. no prior bowel enema, for which the LR- was 0.04 and 0.47, respectively.

CONCLUSIONS

TVS with or without the use of prior bowel preparation is an accurate test for non-invasive, presurgical detection of deep infiltrating endometriosis of the rectosigmoid.

Endometrioma and ART: Does the Needle Work?

Aim and Objectives

The aim of this study was to see if the fertility outcome improved when IVF/ICSI was done after administration of GnRH analogs and cyst aspiration in comparison with patients in whom either only cyst aspiration or only GnRh analogs were administered.

Materials and methods

This was a prospective study done in a tertiary level ART center which included 30 patients over a span of 5 years from 2004 to 2009. All of them had endometriomas and underwent assisted reproductive techniques (ART) either after cyst aspiration with or without GnRH analog pretreatment or only GnRH analog pretreatment.

Depending on the pretreatment received, they were classified into three groups:

• Group B: Both GnRH analog and cyst aspiration

• Group C: Only cyst aspiration

• Group G: Only GnRH analog.

The patients were not randomized.

The number of days required for stimulation, total dose of stimulation required, number of oocytes obtained, quality of embryos, and the pregnancy rates for each group were tabulated for comparison.

Statistical analysis

The significance of the difference in ART outcome after the different modalities of pretreatment, which was estimated in terms of pregnancy rates was evaluated by calculating the p-value.

Observations and results

Significant difference was observed between the pregnancy rates in the three groups, with the maximum pregnancy rate in group B, followed by the group G and then the group C. The p-value showed a trend, though not statistically significant, indicating the need for larger prospective studies with greater number of subjects.

Conclusion

Pretreating endometriomas by aspirating the cysts and administering three doses of GnRH analog depot preparation prior to IVF/ICSI seems to be better than administering GnRH analog depot preparation alone or aspirating the cysts alone in terms of the number of days required for stimulation, the number of oocytes obtained, and the clinical pregnancy rates.

'Blood On The Tracks' from corpora lutea to endometriomas

OBJECTIVE

To detect a direct transition from a haemorrhagic corpus luteum to an endometriotic cyst by serial transvaginal ultrasonographic scans.

DESIGN

Prospective observational study.

SETTING

An academic tertiary care and referral centre for women with endometriosis.

POPULATION

One hundred and nine women younger than 40 years, with regular menstrual cycles, undergoing first-line surgery for endometriomas, and not wanting postoperative oral contraception.

METHODS

Three-monthly transvaginal ultrasonography during the luteal phase for 2 years after surgery.

MAIN OUTCOME MEASURE

Sonographic identification of progression from a haemorrhagic corpus luteum to a recurrent endometriotic cyst.

RESULTS

A haemorrhagic corpus luteum was identified in 13 women. Serial ultrasonographic scans demonstrated transition to an endometriotic cyst in 11 (85%) instances and resorption in two. A unilateral endometriotic cyst without previous detection of a cystic corpus luteum was observed in 14 women.

CONCLUSIONS

Bleeding from a corpus luteum appears to be a critical event in the development of endometriomas.

Decidualized ovarian endometriosis in pregnancy: a challenging diagnostic entity

BACKGROUND

The hormonal milieu that characterizes pregnancy may determine profound modifications of ovarian endometriomas leading to lesions mimicking malignancy. In this study, we report on our experience and perform a review of the literature on this issue.

METHODS

Data from women evaluated at our referral center for prenatal diagnosis were reviewed in order to identify those who were detected with an ovarian endometrioma in pregnancy mimicking malignancy. A review of the literature on this issue (1990-2008) was also performed, using the PubMed database.

RESULTS

Three cases were identified at our center. The literature reports on a further 19 cases (11 studies). Sonographic and color Doppler examination consistently documented rapidly growing and abundantly vascularized intracystic excrescences. Conversely, the presence of septations or significant free fluid was never reported. The vast majority of cases underwent surgical removal. Interestingly, in our experience, in a woman who declined surgery and had spontaneous miscarriage at 10 weeks' gestation, the sonographic examination performed 6 weeks after dilatation and curettage revealed an unremarkable typical endometrioma, thus suggesting that it is a transitory transformation.

CONCLUSIONS

Pregnancy-related modifications of an ovarian endometrioma leading to the rapid development of vascularized intracystic excrescences are an uncommon but possible event. An expectant management and serial monitoring should first be envisaged in these cases provided that other features of malignancy, such as septations or free fluid, are absent.

Endometriosis and Chronic Pelvic Pain: Unraveling the Mystery Behind this Complex Condition

Nurses often encounter patients with chronic pelvic pain associated with endometriosis, which is a puzzling and problematic gynecologic condition that has continued to plague women and baffle doctors and researchers worldwide since it was first identified by Dr. J. Sampson in the 1920s (Sampson, 1940 ). Endometriosis is defined as the growth, adhesion and progression of endometrial glands and stroma outside of the uterine cavity, with cellular activity evident in lesions, nodules, cysts or endometriomas (Audebert et al., 1992 ). Although it typically appears benign on histopathology, endometriosis has been likened to a malignant tumor since the lesions grow, infiltrate and adhere to adjacent tissues and interfere with physiologic processes (Kitawaki et al., 2002 ; Noble, Simpson, Johns, & Bulun, 1996 ). Ectopic endometriotic growths respond to cyclic changes of estrogen and proliferate and shed in a manner similar to eutopic endometrium. This cyclic ectopic activity results in internal bleeding, formation of scar tissue, inflammation and sometimes debilitating chronic pain (Kitawaki et al.).

Can symptomatology help in the diagnosis of endometriosis? Findings from a national case-control study--Part 1

OBJECTIVE

To determine the value of patient-reported symptoms in diagnosing endometriosis.

DESIGN

A national case-control study.

SETTING

Data from the UK General Practice Research Database for years 1992-2001.

SAMPLE

A total of 5540 women aged 15-55 years, diagnosed with endometriosis, each matched to four controls without endometriosis.

METHODS

Data were analysed to determine whether specific symptoms were highly indicative of endometriosis. Odds ratios for these symptoms were derived by conditional logistic regression analysis.

MAIN OUTCOME MEASURES

Symptoms associated with endometriosis.

RESULTS

The prevalence of diagnosed endometriosis was 1.5%. A greater proportion of women with endometriosis had abdominopelvic pain, dysmenorrhoea or menorrhagia (73%) compared with controls (20%). Compared with controls, women with endometriosis had increased risks of abdominopelvic pain (OR 5.2 [95% CI: 4.7-5.7]), dysmenorrhoea (OR 8.1 [95% CI: 7.2-9.3]), menorrhagia (OR 4.0 [95% CI: 3.5-4.5]), subfertility (OR 8.2 [95% CI: 6.9-9.9]), dyspareunia and/or postcoital bleeding (OR 6.8 [95% CI: 5.7-8.2]), and ovarian cysts (OR 7.3 [95% CI: 5.7-9.4]), and of being diagnosed with irritable bowel syndrome (IBS) (OR 1.6 [95% CI: 1.3-1.8]) or pelvic inflammatory disease (OR 3.0 [95% CI: 2.5-3.6]). Women with endometriosis were also found to consult the doctor more frequently than the controls and were twice as likely to have time off work.

CONCLUSIONS

Specific symptoms and frequent medical consultation are associated with endometriosis and appear useful in the diagnosis. Endometriosis may coexist with or be misdiagnosed as pelvic inflammatory disease or IBS.

Postoperative oral contraceptive exposure and risk of endometrioma recurrence

OBJECTIVE

The purpose of this study was to compare the postoperative risk of endometrioma recurrence in women using oral contraception and in those undergoing simple observation.

STUDY DESIGN

After laparoscopic excision of ovarian endometriotiomas, a cyclic, low-dose, monophasic oral contraceptive pill (OCP) was offered to women not seeking pregnancy. One month after surgery, and every 6 months afterward, the patients underwent clinical and ultrasonographic assessment.

RESULTS

Of the 277 patients who entered the study, 102 used OCP for the entire follow-up period (always users), 129 used OCP discontinuously (ever users), and 46 declined treatment (never users). The median follow-up was 28 months. Recurrent endometriotic cysts were detected in 74 subjects (27%). The 36-month cumulative proportion of subjects free from endometrioma recurrence was 94% in the always users compared with 51% in the never users (P < .001); adjusted incidence rate ratio (IRR) = 0.10 (95% CI, 0.04-0.24).

CONCLUSION

Regular postoperative use of OCP effectively prevents endometrioma recurrence.

Endometriosis markers: immunologic alterations as diagnostic indicators for endometriosis

Because endometriosis, a chronic disease affecting 7% to 10% of women, is associated with immunologic aberrations, the authors hypothesize that the presence of specific immune alterations may be diagnostic. Autoantibodies were assayed by Western immunoblotting using antigens derived from the plasma membrane, cytosol, and nucleus from endometrial and ovarian cells. Natural killer (NK) activity was defined by levels of signaling protein zeta and induction of interferon (IFN)-gamma following exposure to patients' sera. Patients with endometriosis exhibited autoantibodies reactive with cellular proteins; endometrial membrane proteins exhibited the greatest reactivity, followed by nuclear antigens. In all subcellular fractions, patients with stage 3 endometriosis exhibited significantly more immunoreactivity than did stage 2 patients, which was greater than that observed in stage 1 patients. The stage-associated increased reactivity resulted from both recognition of additional proteins and enhanced reactivity with shared proteins. Patient sera suppressed NK zeta expression, which resulted in suppression of NK IFN induction. Alterations in autoreactivity and NK activity are observed in endometriosis and may be useful as diagnostic markers, even in early stage disease.

Serum antiendometrial antibodies and diagnosis of endometriosis

PROBLEM

The purpose of the present prospective multi-center study is to investigate the relationship between laparoscopic diagnosis of endometriosis and results of a serum antiendometrial antibody (AEA) assay.

METHOD OF STUDY

Indirect immunofluorescence detection of AEA was performed on serum specimens from patients presenting with dysmenorrhea or chronic pelvic pain and infertility (n = 2609) utilizing frozen sections of endometrium acquired on cycle days 18-21 from normally cycling women without endometriosis. Diagnostic laparoscopy was performed within 1 year of AEA assay on 527 tested women.

RESULTS

The relationship between the serum AEA and laparoscopic verification was characterized by a positive predictive value = 88%, negative predictive value = 86%, sensitivity = 87% and specificity = 87%.

CONCLUSION

The AEA assay is a very good screening test for patients suspected of having endometriosis and should be utilized prior to laparoscopy in diagnostic categories of dysmenorrhea or chronic pelvic pain and infertility.

Plasma urocortin levels in the diagnosis of ovarian endometriosis

OBJECTIVE

Urocortin is a neuropeptide, member of the corticotropin-releasing hormone family, that is produced by the human endometrium. Ovarian endometrioma is a prevalent gynecologic disorder still lacking specific serum markers. In the present study we measured systemic levels of urocortin to assess the diagnostic performance of its determination in distinguishing endometriomas from other benign ovarian cysts.

METHODS

Plasma urocortin was measured by radioimmunoassay in women with ovarian endometrioma (n=40) and in women with benign, nonendometriotic ovarian cysts (n=40). The diagnostic accuracy of urocortin measurement was evaluated by receiver operating characteristic curve and compared with the standard marker, CA 125. To support the local origin of the peptide, we also evaluated its localization in endometriomas by immunohistochemistry and its concentrations in cyst fluid and peritoneal fluid of 12 women with endometrioma.

RESULTS

Plasma urocortin levels were twice as high in women with endometrioma (median 49 pg/mL, interquartile range 41-63 pg/mL) than in the control group (19 [15-23] pg/mL, P<.001) and significantly higher in the cystic content of endometriomas than in the peritoneal fluid and plasma (P<.05). The peptide was immunolocalized in endometrioma glands and stromal capillary vessels. Elevated plasma urocortin levels detected 88% of the cases of endometrioma with 90% specificity, whereas CA 125 detected only 65% of the cases with the same specificity.

CONCLUSION

Plasma urocortin is increased in women with endometriomas, and its measurement may be useful for the differential diagnosis of endometrioma compared with other benign ovarian cysts.

LEVEL OF EVIDENCE

II.

GnRH agonist and antagonist protocols for stage I–II endometriosis and endometrioma in in vitro fertilization/intracytoplasmic sperm injection cycles

OBJECTIVE

To investigate the outcomes of intracytoplasmic sperm injection (ICSI) cycles after controlled ovarian hyperstimulation (COH) with GnRH antagonist or GnRH agonist (GnRH-a) in mild-to-moderate endometriosis and endometrioma.

DESIGN

Prospective randomize trial.

SETTING

A private IVF center.

PATIENT(S)

A total of 246 ICSI cycles in 246 patients were divided into three groups: women with mild-to-moderate endometriosis (n = 98); women who had ovarian surgery for endometrioma (n = 81); women with endometrioma and no history of previous surgery (n = 67).

INTERVENTION(S)

Patients in each group were randomized to COH with either triptrolein or cetrorelix.

MAIN OUTCOME MEASURE(S)

Clinical parameters, characteristics of COH, and ICSI results were analyzed.

RESULT(S)

Outcomes of COH with both GnRH antagonist and GnRH-a were similar in patients with mild-to-moderate endometriosis. Implantation rates were 15.9% vs. 22.6% and clinical pregnancy rates were 27.5% vs. 39% with GnRH antagonist and GnRH-a protocols, respectively, in patients who had ovarian surgery for endometrioma. Implantation rates were 12.5% vs. 14.8% and clinical pregnancy rates were 20.5% vs. 24.2% with GnRH antagonist and GnRH-a protocols, respectively, in patients with endometrioma and no history of ovarian surgery.

CONCLUSION(S)

Considering the implantation and clinical pregnancy rates, COH with both GnRH antagonist and GnRH-a protocols may be equally effective in patients with mild-to-moderate endometriosis and endometrioma who did and did not undergo ovarian surgery.

Prise en charge de l'endométriose: évaluation clinique et biologique

No symptom is pathognomonic for endometriosis. Main symptoms are pain (chronic pelvic pain, dysmenorrhea, deep dyspareunia, pain on defecation, cyclic pain) and infertility (grade C). There is no relation between rAFS endometriosis classification and symptoms intensity and frequency (grade B). Endometriosic lesions location and symptoms type are related to each other as well as symptoms intensity and lesions deepness or adhesion numbers (grade B). Clinical evidence is the same for infertile endometriosic women (grade C). Screening for depression is required among patients suffering from chronic endometriosic pelvic pain (grade C). Clinical examination includes: 1) retrocervix area inspection as well as upper part of posterior vaginal wall in search for typical bluish lesions (grade B); 2) vaginal examination in search for: a) uterosacral ligaments nodules (grade B); b) pain in uterosacral ligaments extension (grade B); 3) re-examination during menstruation increases its performance (grade B). No biological check-up in endometriosis diagnosis is necessary (grade A). CA 125 increase is related to: endometriomas and deep lesions volume (grade B), surgically treated infertile women prognosis (grade B). Presurgical endometriosis diagnosis is bettered by using diagnosis pattern in selected population (grade B). Rating scales are recommended in diagnosis and therapeutic follow up (grade B). Quality of life scales are useful to evaluate therapeutic efficiency (grade B).

GnRH analogs: options for endometriosis-associated pain treatment

While none of the currently available treatment options for endometriosis pain resolved the underlying disease process, there are growing numbers of medical alternatives available. Medical options include the GnRH agonists and antagonists. Review of these treatments in the management of endometriosis pain and the insight often to the etiology of endometriosis are presented for discussion.

Delayed diagnosis of endometriosis

When following current pelvic pain management algorithms, appropriate counseling may lessen emotional and social issues associated with endometriosis-associated pelvic pain.

Diagnosis of endometriosis and pelvic pain

Both the American and the Royal Colleges of Obstetricians and Gynecologists have produced guidelines that recommend patients with chronic pelvic pain, including those suspected of having endometriosis, should receive empirical medical therapy without a preliminary diagnostic laparoscopy. This paper reviews the implications of this approach.

The presence of ovarian endometriomas is associated with a reduced responsiveness to gonadotropins

OBJECTIVE

To clarify whether the presence of ovarian endometriomas is associated with a reduced responsiveness to ovarian hyperstimulation.

DESIGN

Observational study.

SETTING

University teaching hospital.

PATIENT(S)

Women selected for in vitro fertilization-intracytoplasmic sperm injection (IVF-ICSI) cycles who were found to have unilateral ovarian endometriomas and who did not undergo previous ovarian surgery.

INTERVENTION(S)

Ovarian hyperstimulation using gonadotropins.

MAIN OUTCOME MEASURE(S)

Number of codominant follicles (mean diameter >15 mm) in the affected and in the contralateral intact gonads.

RESULT(S)

Thirty-six patients were enrolled. They underwent 56 IVF-ICSI cycles. The number of codominant follicles in the intact and affected ovaries were 4.0 +/- 2.2 and 3.0 +/- 1.7, respectively (P=.01). This difference corresponded to a mean reduction (95% confidence interval [CI]) of 25% (6%-44%). This deleterious effect was more evident in women with larger cysts, in those with more than one cyst, and in those who were more responsive to ovarian hyperstimulation.

CONCLUSION(S)

The presence of ovarian endometriomas is associated with a reduced responsiveness to gonadotropins.

Evaluation of monocyte chemotactic protein-1 levels in peripheral blood of infertile women with endometriosis

OBJECTIVE

To test whether serum monocyte chemotactic protein-1 (MCP-1) chemokine levels correlate with endometriosis in infertile women.

STUDY DESIGN

A group of women with endometriosis (n = 18, infertile) was compared with patients with uterine leiomyoma (n = 16, fertile), unexplained infertility (n = 5, infertile), and healthy women (n = 16, fertile). MCP-1 expression levels were evaluated by ELISA assay. The data obtained were statistically analyzed using the Mann-Whitney test. P-Values <0.05 were considered as significant.

RESULTS

MCP-1 concentrations (median; range of values) in serum were as follows: women with endometriosis (221; 101-635 pg/ml), women with unexplained infertility (167, 114-234 pg/ml), women with uterine leiomyoma (137; 88-200 pg/ml), and healthy donors (123; 98-194 pg/ml). Significant differences were observed in the women with endometriosis compared with those with uterine leiomyoma (p = 0.02) and healthy donors (p = 0.002). Among the women with endometriosis, the level of significance in MCP-1 level at rAFS stages III-IV was higher than that at rAFS stages I-II compared with healthy donors and women with leiomyoma (p = 0.002 and p = 0.02, respectively).

CONCLUSIONS

These data show that an increased level of MCP-1 can characterize infertile women with endometriosis. However, further studies are needed to be able to determine whether increased MCP-1 chemokine expression can be related to infertility or is a result of endometriosis progress.

Association of endometriosis with body size and figure

OBJECTIVE

To determine whether body size and perceived figure, both current and historical, are associated with a diagnosis of endometriosis on laparoscopy.

DESIGN

Cohort study of consecutively identified patients undergoing laparoscopy for tubal sterilization or as a diagnostic procedure.

SETTING

Two university-affiliated hospitals.

PATIENT(S)

A cohort of 84 women aged 18-40 years. Endometriosis was visualized in 32 cases; 52 women (controls) had no visualized endometriosis, including 22 undergoing tubal sterilization and 30 with other gynecologic pathology.

INTERVENTION(S)

None.

MAIN OUTCOME MEASURE(S)

Body mass index (BMI, kg/m2) from self-report and perception of body figure were compared for their ability to predict case status (diagnosed endometriosis), using logistic regression models. Longitudinal trends in BMI based on perceived figure at 5-year intervals from age 15 years were compared using mixed linear models.

RESULT(S)

Based on self-report, women diagnosed with endometriosis were taller, thinner, and had a significantly lower BMI. In this series, cases were more likely to be late maturers (menarche at > or = 14 y) and late to initiate sexual activity (> or = 21 y), and they were less likely to be gravid, parous, and a current smoker. Adjusting for age (in years), being tall (height > or = 68 in), and parity (yes vs. no), a higher current BMI was statistically protective for a diagnosis of endometriosis, regardless of whether BMI was determined by self-report (adjusted odds ratio [AOR] = 0.88, 95% confidence interval [CI] 0.79-0.99) or from perceived figure (AOR = 0.86, 95% CI 0.75-0.99). For every unit increase in BMI (kg/m2), there was an approximate 12%-14% decrease in the likelihood of being diagnosed with endometriosis. In an adjusted repeated measures model, BMI was 21.3 +/- 0.6 kg/m2 (estimate +/- SE) for women with endometriosis, compared with 23.2 +/- 0.4 kg/m2 for the controls, a difference over all ages of -1.9 +/- 0.8 kg/m2. This is a consistent difference of about 10 lb at every age, assuming an average height of about 64.5 in.

CONCLUSION(S)

In a laparoscopy cohort, women diagnosed with endometriosis were found to have a lower BMI (leaner body habitus), both at the time of diagnosis and historically. That women diagnosed with endometriosis may have a consistently lean physique during adolescence and young adulthood lends support to the suggestion of there being an in utero or early childhood origin for endometriosis.

Should endometriomas be treated before IVF–ICSI cycles?

The laparoscopic excision of ovarian endometriomas appears to increase the chances of spontaneous conception, but the value of this treatment in women selected for IVF-ICSI cycles is debated. Studies recruiting women with unilateral disease and comparing ovarian responsiveness in the affected and contralateral intact gonads indicate that excision of endometriomas is associated with a quantitative damage to ovarian reserve. There are no randomized trials comparing laparoscopic excision to expectant management before IVF-ICSI cycles. The idea that surgery increases IVF pregnancy rates is not supported by the available evidence. However, the chance of conception is not the only issue that has to be considered. Some potential drawbacks are associated with both therapeutical strategies. Specifically, costs and hazard of surgical complications support expectant management whereas oocyte retrieval risks, the possibility of missing occult malignancy and endometriosis progression due to ovarian stimulation would favour surgical treatment. Alternative therapeutical options include medical treatment and ultrasound-guided aspiration. Whereas prolonged GnRH agonist down-regulation may be beneficial, data on ultrasound aspiration are more controversial.

Dioxin-Like TEQ of women from the Seveso, Italy area by ID-HRGC/HRMS and CALUX

Polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) are widespread environmental contaminants that exist as complex mixtures and are frequently detected at part-per-trillion (ppt) levels in humans. Using isotope dilution high-resolution gas chromatography/ high-resolution mass spectrometry (HRGC/HRMS), we measure the PCDDs, PCDFs, and PCBs in serum of a population of 78 women residing in an area near Seveso, Italy where a TCDD explosion occurred in 1976 and where furniture is manufactured. The average total dioxin-like toxic equivalents (TEQ) of these women was 25.3 ppt, lipid-adjusted, comparable to other parts of Europe. TCDD levels, however, were higher among the few women who resided in the exposed area in 1976. We examined the possibility of using the CALUX (chemical-activated luciferase gene expression) bioassay to estimate total TEQ in a small volume of plasma from this population. A total of 32 archived plasma specimens were selected for CALUX bioassay, based on the distribution of Total TEQ by HRGC/HRMS. The CALUX bioassay was performed blind to HRGC/HRMS results with 2 ml plasma per replicate analysis. Of 32 samples, 10 were below detection limits in the CALUX bioassay. For the 32 samples, the CALUX-TEQ averaged 25.4 ppt, lipid-adjusted (range: 0-127.6) and was not significantly different from the HRGC/HRMS Total TEQ average of 31.2 ppt, lipid-adjusted (range: 12.7-88.3) (t = 0.88, P = 0.38), however, the two measures were not significantly correlated (R(s) = 0.04, P=0.82). More validation of the CALUX bioassay with larger sample volume is needed before application as an exposure measure in large-scale epidemiologic studies of health effects of dioxin-like compounds.

Usefulness and limits of CA-125 in diagnosis of endometriosis without associated ovarian endometriomas

BACKGROUND

The aim of this study was to evaluate the diagnostic significance of CA-125 for endometriosis without ovarian endometriomas.

METHODS

Preoperative serum CA-125 levels were measured in 775 consecutive women diagnosed by laparoscopy or laparotomy with endometriosis, adenomyosis, leiomyomas, or normal pelvis.

RESULTS

Receiver operating characteristic curve analysis revealed that the area under the curve for endometriosis without endometriomas was 0.788, significantly smaller than that for endometriosis with endometriomas (0.935, P < 0.05). In diagnosis of endometriosis without endometriomas, both the maximal accuracy of 78.8% and the maximal diagnostic value of 61.2% were obtained at the cutoff value of 20 U/mL. Negative predictive value was 78.0% at the cutoff value of 20 U/mL, whereas positive predictive value was 92.9% at the cutoff value of 30 U/mL. This range is clearly superior to the empirical single cutoff of 35 U/mL.

CONCLUSIONS

In the diagnosis of endometriosis without endometriomas, combined use of two cutoff values for CA-125, 20 and 30 U/mL, provides improved diagnostic performance. However, the accuracy of using only CA-125 testing for diagnosis is still limited. Serum CA-125 testing can be done during initial screenings of women with possible endometriosis.

A predictive model for endometriosis

BACKGROUND

Aromatase is the key enzyme in the process of estrogen biosynthesis from the precursor androgen. Recently, aromatase has been found to be aberrantly expressed in eutopic endometrium of patients suffering from endometriosis. This finding has prompted speculation about the contribution of this enzyme to the prediction of this disease.

METHODS

We prospectively aimed to evaluate whether endometrial biopsy, prior to laparoscopy in symptomatic women to screen for the presence of aromatase by real-time RT-PCR and immunohistochemistry, combined with select patients' characteristics, is of value to predict endometriosis.

RESULTS

Of 48 consecutive symptomatic and eligible patients, 25 (52.1%) exhibited endometriosis and 23 (47.9%) were disease-free. A multiple logistic regression model revealed that 95.5% of patients whose eutopic endometrium was found to be positive for aromatase mRNA as well as immunohistochemically detected protein and who were additionally suffering from moderate to severe dysmenorrhoea (visual analogue scale score >4/10) exhibited endometriosis at laparoscopy.

CONCLUSIONS

These findings provide direct evidence that screening for eutopic endometrial aromatase in combination with clinical data could be of discriminative value in the prediction of disease.

Symptom distribution among infertile and fertile endometriosis cases with different stages and localisations

OBJECTIVE

To evaluate endometriosis patients' symptoms and relate them to different stages and locations of endometriosis and also to fertility/infertility of the patients.

STUDY DESIGN

Sixty-eight patients diagnosed with endometriosis constituted the population investigated in this cross-sectional observational study, 55 and 13 of whom were diagnosed from the visual findings recorded during laparoscopy and laparotomy, respectively. All cases were categorised as early- (stages I and II) or late (stages III and IV)-stage endometriosis and as fertile or infertile endometriosis. The extent of endometriosis was further divided into peritoneal, ovarian, and ovarian and peritoneal. Symptoms of dysmenorrhoea, deep dyspareunia, dyschesia and dysuria and also depressive mood state were analysed and compared among those different groups.

RESULTS

Cyclic chronic pelvic pain was more relevant in late-stage endometriosis (P = 0.04). Deep dyspareunia, painful defecation, dysuria, infertility, and depressive state did not differ with stages of endometriosis or fertility status. Admission for pelvic pain of any duration was more prevalent among fertile patients with endometriosis (P = 0.008). Chronic noncyclic pelvic pain was more frequently observed in patients with fertile than in those with infertile endometriosis (P = 0.01). More cases in the fertile group experienced noncyclic pelvic pain (P = 0.04). More patients admitted with cyclic pelvic pain had ovarian or ovarian and peritoneal endometriosis than peritoneal endometriosis only (P = 0.03). Infertility was more prevalent among peritoneal endometriosis cases than among those with ovarian or peritoneal and ovarian involvement (P = 0.008).

CONCLUSION

Symptoms of endometriosis may predict the stage and localisation of the disease to some extent.