Abstract
Endometriosis is defined by the presence of ectopic endometrial tissue outside the uterus, frequently located on pelvic
organs such as the fallopian tubes and ovaries, and occasionally beyond the pelvic region. This condition manifests as
dysmenorrhea, chronic pelvic pain, dyspareunia, and subfertility. Despite extensive research, the etiology and
pathogenesis of endometriosis remain unclear, with laparoscopy being the definitive diagnostic method.
The association between endometriosis and infertility has been extensively debated. Endometriosis can impair fertility
by disrupting embryo implantation, altering hormone levels, and compromising oocyte quality. This literature review
aims to examine the effects of endometriosis on female fertility.
The review encompasses documents from clinical trials with control groups involving 196 to 22,416 reproductive-age
participants (25-42 years), and case studies published over the past thirty-seven years from various regions (USA,
Australia, Turkey, Africa, and Europe. Reputable databases such as BMJ, NEJM, Elsevier, AJR, Medline, and PubMed were
utilized, with references compiled in the bibliography.
A risk-benefit analysis indicates that up to 50% of women with endometriosis experience infertility. Consensus on
treatment options remains elusive. The relationship between endometriosis and infertility is supported by studies of
both fertile and infertile women, animal studies, donor sperm studies, and in vitro fertilization outcomes. Diagnostic
methodologies based on endometrial changes are providing insights into potential mechanisms of infertility, especially
in women with milder disease. However, clinical management of endometriosis-related infertility has not shown
conclusive success beyond in vitro fertilization.
Keywords
Endometriosis; Female fertility; Infertility; Diagnostic methodologies
1. Introduction
Endometriosis is a prevalent condition characterized by the abnormal growth of endometrial cells outside the uterus.
These aberrant growths are most commonly found in pelvic organs such as the ovaries, peritoneum, uterosacral
ligaments, pouch of Douglas, and rectovaginal septum. Although rare, extra pelvic endometrial abnormalities can occur
in locations such as the umbilicus and stomach. The presence of endometrial tissue in these areas can cause irritation,
pain, and adhesions on the affected structures [23, 5].
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Figure 1 Endometriosis locations [10]
1.1. Aetiology and Pathogenesis
The etiology and pathogenesis of endometriosis remain largely unclear, although there is increasing evidence that it is
a complex multifactorial disease with both genetic and environmental components contributing to its development [17].
Heritability: Individuals with a family history of endometriosis, particularly among first -degree relatives, are at
a higher risk of developing t he condition [17, 9].
Retrograde menstruation flow: The most widely accepted theory for the pathophysiology of endometriosis
suggests that endometrial cells are transported intra-abdominally from the uterine cavity through the fallopian
tubes during menstr uation [6, 9]. Various risk factors may enable endometrial cells to survive in ectopic
locations [6].
Adhesions: Surgical scar implantations may attach to endometrial cells, leading to the development of
endometriosis [6].
Mu llerian metaplasia: This theory posits that coelomic epithelium transforms into endometrium -like cells [6,
9].
Lymph vascular emboli of endometrial cells: Endometrial cells may be transported to distant sites, such as the
pleural cavity, through the lymphatic or circulatory systems [6].
Increased incidence of luteinized unruptured ovarian follicle syndrome (Trapped Oocyte): Patients with severe
endometriosis and distorted pelvic anatomy exhibit a high rate of infertility, potentially due to abnormalities in
oocyte development and tubal transport [6].
Early menarche or Late menopause: These complications may arise in response to hormonal changes during
the menstrual cycle [1].
1.2. Symptoms of Endometriosis
Common signs and symptoms of endometriosis include [12, 5, 20]
Painful periods (Dysme norrhea): Pelvic pain and cramping may begin before and extend for several days into
the menstrual period, often accompanied by lower back and abdominal pain.
Dyspareunia: Pain during or after sexual intercourse, which is a frequent symptom.
Pain with bowel movements or urination: These symptoms are most pronounced during menstruation.
Excessive bleeding: Patients may experience heavy menstrual periods or intermenstrual bleeding.
Infertility: Defined as the inability to conceive after one year (or more) of unprotected sexual intercourse.
1.3. Use of the Endometriosis Fertility Index
The Endometriosis Fertility Index (EFI) is a tool designed to predict the likelihood of achieving pregnancy following
surgery. Its utility is assessed for forecasting the capacity to conceive without assisted reproductive technology (ART)
after laparoscopic surgery. A study conducted in France from 2013 to 2016 involved 196 infertile patients to evaluate
the effectiveness of the EFI [3].
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Figure 2 Endometriosis Fertility Index [11]
The study population met the following criteria:
1.4. Criteria for Study Inclusion
Participants in the study met the following criteria:
Infertility persisting for over 12 months
Presence of asymptomatic pelvic pain, dysmenorrhea, and/or deep dyspareunia
Normal or abnormal hysterosalpingogram results
Normo-ovulation or failure to conceive after three cycles of superovulation, with or without intrauterine
insemination (IUI), used as first -line therapy for unexplained infertility
Laparoscopic diagnosis of endometriosis
Partner’s semen classified as normal according to World Health Organisation (WHO) criteria [3]
2. Results
Among the 196 infertile women who underwent laparoscopic surgery for endometriosis -related infertility, the study
yielded the following outcomes:
9 women (4.6%) were lost to follow -up.
26 women (13.2%) with an EFI score of 4 were referred directly to ART .
56 women (28.9%) with EFI scores of 5–6 received non-ART management for 3–6 months.
114 women (58.2%) with EFI scores of 7 or higher received non-ART management for up to 12 months.
73 women (37.2%) achieved pregnancy through non -ART management:
18 women (32.1%) had EFI scores of 5–6.
55 women (48.2%) had EFI scores of 7.
The mean time to conceive for women with EFI scores of 5 –6 and 7 was 5.2 m onths (SD 2.8) and 3.9 months (SD 2.9),
respectively [3].
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In routine clinical practice, 149 women (76%) achieved pregnancy, with 37.2% after non-ART management and 38.8%
after ART management. The 'baby take-home rate' was 57.1% [3].
The Endometriosis Ferti lity Index proved to be a valuable tool for predicting fertility outcomes in infertile patients
undergoing surgery for endometriosis. Patients with a low EFI score should be promptly referred to ART to increase
overall pregnancy rates [3].
2.1. Effect of Endometriosis on Infertility
2.1.1. Endometriosis-Associated Infertility
The prevalence of endometriosis is notably higher among women of Filipino, Indian, Japanese, and Korean descent [21].
Clinical manifestations of endometriosis vary based on the location of the ec topic endometrial tissue and can include
dysmenorrhea, dyspareunia, chronic pelvic pain, and infertility, though some individuals may be asymptomatic. A
significant challenge in the timely diagnosis and management of endometriosis is the lack of a clear correlation between
symptoms and disease severity [21, 2].
Endometriosis is a leading cause of infertility through various mechanisms, although not all women with endometriosis
experience difficulty conceiving [21, 2].
The primary mechanism involves altered anatomical structures. Pelvic adhesions impair oocyte release and ostial
pickup, alter sperm motility, and affect myometrial contractions, leading to modified embryo transport and fertilization.
Endometriosis can impact any stage of the reproductiv e process. Inflammatory cells in the peritoneal fluid and
endometriomas have detrimental effects on oocytes, embryos, and sperm, impairing tubal function and reducing tubal
mobility. This results in a lower fertilization rate in both natural and in vitro c ycles [8, 14].
Endometriosis negatively affects the physiology of granulosa cells, leading to increased apoptosis and altered
steroidogenesis by decreasing aromatase expression. This causes an imbalance in estrogen production, resulting in
lower estradiol concentrations during the preovulatory phase and at the LH surge. The follicular phase is prolonged in
these patients, as the LH surge is delayed or biphasic, leading to altered postovulatory progesterone release, which may
affect oocyte maturation [8, 21].
The impact of endometriosis on the endometrium is also significant. A 2012 study demonstrated that cells could migrate
from ectopic endometrial implants back to the uterine endometrium. These migrating cells exhibit upregulation of the
Wnt7A gene, which affects endometrial receptivity during the implantation window. The Wnt7A gene is associated with
estrogen-mediated uterine development and implantation [14, 19]. Another important gene is Hoxa10, which is
involved in endometrial regeneration. Women with e ndometriosis have lower levels of Hoxa10, potentially explaining
the reduced implantation rates. Additionally, higher levels of matrix metalloproteinases, which cause persistent
endometrial breakdown, and lower levels of αβ -integrin, which impair embryo attachment, further contribute to lower
implantation rates [14].
2.1.2. The Impact of Endometriosis on Early Embryo Morpho kinetics
A study conducted in Turkey evaluated 82 In Vitro Fertilisation (IVF) cycles, including 53 cycles with endometriosis and
29 cycles with tubal factor infertility. A total of 439 embryos were assessed for embryo morpho kinetics [4].
The presence of endometriosis was confirmed through laparotomy or laparoscopy in 27 patients and via transvaginal
ultrasonography (TVUSG) in 26 patients, given the high diagnostic accuracy of TVUSG (Savelli 2009). Post-laparoscopic
surgery, the diagnosis of endometriosis was verified by expert pathologists. The study included patients with grade 3 –
4 endometriosis. The control group consisted of 30 women with l aparoscopically confirmed tubal factor infertility
undergoing their first IVF attempt, with no evidence of endometriosis or hydrosalpinx at the time of laparoscopy.
Clinical pregnancy was confirmed by the visualization of a gestational sac and foetal heart beat using TVUSG two weeks
after serum Human Chorionic Gonadotropin (βhCG) measurement [4].
In all cycles, ejaculated spermatozoa were used. Exclusion criteria included women over 40 years of age, those with
partners suffering from male factor infertility, individuals requiring preimplantation genetic diagnosis due to structural
or numerical chromosomal errors, and patients with uterine anomalies or polycystic ovary syndrome [4].
The study's findings indicate that endometriosis significantly influences early morpho kinetic events and cell cycles [4].
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Table 1 Embryo morpho kinetics data of the study and control groups, respectively [4]
Study Group Control Group p-value
No, of embryos 264 175
tPB2 6.51 ± 9.07 3.71 ± 1.98 p < 0.01
tPNa 12.50 ± 7.87 11.13 ± 174 p < 0.01
tPNf 25.90 ± 6.31 25.30 ± 7.87 NS
t2 28.64 ± 5.24 28.25 ± 5.40 NS
t3 38.02 ± 6.87 37.67 ± 6.33 NS
t4 41.44 ± 7.35 40.19 ± 6.29 NS
t5 50.51 ± 9.86 49.76 ± 10.41 NS
t6 55.28 ± 10.14 53.77 ± 9.91 NS
t7 58.11 ± 10.14 58.33 ± 10.28 NS
t8 62.67 ± 11.80 61.45 ± 11.09 NS
t9 71.57 ± 13.37 69.62 ± 1158 NS
VP (tPNf-tPNa) 13.25 ± 6.23 14.87 ± 7.79 NS
ECC1 (tPb2-12) 22.19 ± 8.23 24.56 ± 5.66 p < 0.01
cc2a (t3-t2) 9.37 ± 5.08 9.42 ± 4.89 NS
ECC2 12.87 ± 5.47 12.02 ± 4.73 NS
FCC3 22.56 ± 9.4.6 22.03 ± 9.30 NS
52(t4-t3) 3.40 ± 5.31 2,53 ± 4,24 p z 0.01
S3(t8t5) 12.40 ± 9.20 12.59 ± 10.01 NS
GQE (%) 78 ± 41,2 93 ± 25,3 p < 0.01
Values are shown as mean±SD. Differences between means were tested by t-test for equality of means. NS = not significant GQE = Good Quality
Embryos
Table 2 Differences in morpho kinetic data in contro l and study groups with respect to good and poor embryo quality
[4]
GOOD POOR
Study group Control
group
p-value Study group Control
group
p-
value
No. of
embryos
207 163 57 12
tPB2 7.12 ± 9.91 3.69 ± 1.98 p < 0.01 4.27 ± 4.24 3.89 ± 1.96 NS
tPNa 12.88 ±- 8.56 11.15 ±- 3.76 p < 0.05 11.10 ± 4.35 10.79 ± 3.48 NS
tPNf 25.51 ± 6.46 25.99 ± 8.11 NS 27.29 ± 5.53 26.05 ± 3.36 N5
t2 27.85 ± 3.76 28.22 ± 5.49 N5 31.47 ± 8.12 28.60 ± 4.07 NS
t3 37.10 ± 6.19 37.63 ± 6.20 NS 41.31 ± 8.15 38.07 ± 8.20 N5
t4 40.40 ± 6.60 40.03 ± 5.90 NS 45.18 ± 8.66 42.35 ± 10.36 NS
t5 50.43 ± 10.04 49.23 ± 9.24 N5 50.75 ± 9.25 56.74 ± 19.83 NS
t6 55.04 ± 10.17 53.54 ± 8.82 NS 56.46 ± 10.02 56.82 ± 19.82 NS
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t7 58.11 ± 10.12 58,32 ± 10.28 NS 58.25 ± 11.36 ND
t8 62.66 ± 11.83 61.45 ± 11.09 N5 ND ND
t9 71.56 ± 13.37 69.62 ± 11.57 NS ND ND
VP (tPNf -
tPNa)
12.61 ± 6.41 14.83 ± 7.96 p < 0.05 15.69 ± 4.82 15.26 ± 5.15 NS
ECC1 (tPb2-
t2)
21.18 ± 8.10 24.51 ± 5.75 p < 0.01 26.10 ± 7.60 25.15 ± 4.20 NS
cc2a (t342) 9.24 ± 5.04 9.41 ± 4.77 NS 9.84 ± 5.23 9.47 ± 6.59 NS
ECC2 12.54 ± 5.32 11.81 ± 4.45 NS 14.55 ± 6.01 15.40 ± 7.48 N5
ECC3 22.25 ± 9.46 22.02 ± 9.29 NS ND ND
52(t4-t3) 3.28 ± 5.18 2.40 ± 4.05 NS 3.87 ± 5.78 4.28 ± 6.20 NS
53(t8-15) 12.47 ± 9.17 12.58 ± 10.09 NS ND ND
tPB2 7.12 ± 9.91 3.69 ± 1.98 p < 0.01 4.27 ± 4.24 3.89 ± 1.96 NS
tPNa 12.88 ±- 8.56 11.15 ±- 3.76 p < 0.05 11.10 ± 4.35 10.79 ± 3.48 NS
tPNf 25.51 ± 6.46 25.99 ± 8.11 NS 27.29 ± 5.53 26.05 ± 3.36 N5
t2 27.85 ± 3.76 28.22 ± 5.49 N5 31.47 ± 8.12 28.60 ± 4.07 NS
t3 37.10 ± 6.19 37.63 ± 6.20 NS 41.31 ± 8.15 38.07 ± 8.20 N5
t4 40.40 ± 6.60 40.03 ± 5.90 NS 45.18 ± 8.66 42.35 ± 10.36 NS
t5 50.43 ± 10.04 49.23 ± 9.24 N5 50.75 ± 9.25 56.74 ± 19.83 NS
t6 55.04 ± 10.17 53.54 ± 8.82 NS 56.46 ± 10.02 56.82 ± 19.82 NS
t7 58.11 ± 10.12 58,32 ± 10.28 NS 58.25 ± 11.36 ND
t8 62.66 ± 11.83 61.45 ± 11.09 N5 ND ND
t9 71.56 ± 13.37 69.62 ± 11.57 NS ND ND
VP (tPNf -
tPNa)
12.61 ± 6.41 14.83 ± 7.96 p < 0.05 15.69 ± 4.82 15.26 ± 5.15 NS
ECC1 (tPb2-
t2)
21.18 ± 8.10 24.51 ± 5.75 p < 0.01 26.10 ± 7.60 25.15 ± 4.20 NS
cc2a (t342) 9.24 ± 5.04 9.41 ± 4.77 NS 9.84 ± 5.23 9.47 ± 6.59 NS
ECC2 12.54 ± 5.32 11.81 ± 4.45 NS 14.55 ± 6.01 15.40 ± 7.48 N5
ECC3 22.25 ± 9.46 22.02 ± 9.29 NS ND ND
52(t4-t3) 3.28 ± 5.18 2.40 ± 4.05 NS 3.87 ± 5.78 4.28 ± 6.20 NS
53(t8-15) 12.47 ± 9.17 12.58 ± 10.09 NS ND ND
With these discoveries, it is clear that endometriosis dominatingly influences the term of the early morpho kinetic
occasions and cell cycles.
2.1.3. Oocyte Quality in Women with Endometriosis-Associated Infertility
Endometriosis significantly impacts clinical markers of oocyte quality, which is a critical factor in reproduction. This
study aims to evaluate the quality of oocytes in women with inferti lity related to endometriosis. The investigation
involved infertile women of reproductive age, ranging from 29 to 40 years, who underwent IVF and Intra -Cytoplasmic
Sperm Injection (ICSI) procedures. Participants were divided into three groups:
Group I: 50 patients with recurrent unilateral endometriomas
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Group II: 50 patients with unilateral endometriomas after surgical treatment
Control Group: 30 patients with tubal factor infertility
Clinical and morphological assessments of oocyte quality were performed i n all IVF/ICSI cycles [16, 18, 20,22, 24].
Table 3 Baseline Characteristics of Women with Infertility [16]
Characteristics Group I in =
501
Group II
(n=50)
Control group (n =
30)
Age, years 3336 ± 45 32.64±4,2 31.73 ± 421
Infertility duration 4.6 ± 2_4 4.2 ± 2.1 33±2.6
AMH 2.2 ± 13 2.1 ± 1,8 3.0±1.8
The number of antral follicles in the affected ovary 4.1 ± 15 5.4± 13 125±2.9 (at both
sides)
The number of antral follicles in the intact ovary 72±2.6 7.8 ± 23
Total number of nocytes recovered 8.8 ± 3.9 9.2±3.2 10.1 ±6.8
The number of high -quality oocytes obtained (oocyte in
metaphase II)
4.1 ± 2_0 5.2 ± 2.6 9.6 ±3..5
Table 4 Characteristic of patients with endometriomas [16]
Size of endometriomas Group I (n = SO) Group II (n = 50)
>10mm 18 (36%) 24 (48%)
10-20 mm 20 (40%) 18 (36%)
20-30 mm 8 (16%) 6 (12%)
30-40 mm 4 (8%) 1 (2%)
The findings of the investigation indicate a statistically significant increase in the number of immature oocytes at
metaphase I (MI) and the germinal vesicle (GV) stage in patients with endometriosis-associated infertility compared to
the control group (p < 0.005). Additionally, there was notable degeneration of oocytes in patients with endometriomas
exceeding 3 cm in diameter. These results suggest that endometriomas negatively impact oocyte quality, and that even
after cystectomy, endometriomas continue to have a detrimental effect on the ovaries [16, 18, 20, 22, 24].
Therefore, it can be concluded that endometriomas, both before and after surgical intervention, adversely affect ovarian
quality [16, 18, 20, 22, 24].
2.2. Chronic Niche Inflammation in Endometriosis Development
Chronic inflammation within the tissue niche, particularly in the peritoneal cavity, ovaries, and uterus, plays a crucial
role in the development of endometriosis [13].
2.3. Peritoneal Cavity
The presence of peritoneal fluid in the peritoneal cavity results from the exudation of developing follicles and the corpus
luteum. This fluid contains electrolytes, urea, steroidal hormones such as estrogen and progesterone, and other
components like endometrial cells, macrophages, lymphocytes, and eryth rocytes. Some of these components have
secretory functions; for instance, endometrial cells secrete glycodelin, and macrophages secrete cytokines and
angiogenic factors [13].
Infertility in most cases of endometriosis is primarily due to chronic inflamma tion induced by the abnormal
environment, such as the increased volume of peritoneal fluid. Significant changes in the immune system include the
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inhibition of T-cell-mediated cytotoxicity, decreased natural killer cell activity, and a rapid increase in pro-inflammatory
cytokines and activated macrophages. These sudden changes create an oxidative and immunotolerant
microenvironment conducive to endometriotic implantations [13].
Endometriotic implants secrete various substances, including estradiol, progest erone, monocyte chemoattractant
protein (MCP)-1, transforming growth factor (TGF)-β, and vascular endothelial growth factor (VEGF). Additionally, pro-
inflammatory cytokines such as interleukins (IL) -1, IL -6, and IL -8, and tumour necrosis factor alpha (TNF -α) are
secreted. This mixture of secretions in the peritoneal fluid stimulates proliferative and angiogenic processes,
contributing to the development and rapid progression of endometriosis [13].
The formation of endometriomas in the ovaries disrupts org an functionality and induces localized effects. The cystic
fluid within endometriomas contains pro -inflammatory cytokines (IL-6 and IL-8), reactive oxygen species (ROS), TGF -
β, and matrix metalloproteinases (MMPs). These components of cystic fluid alter th e surrounding tissue of nearby
endometriomas, leading to decreased follicular density, increased fibrosis, and loss of cortical stroma. Caspase -3
immunostaining has revealed signs of atresia in early follicles in tissue biopsies from ovaries containing endometriomas
[13].
TGF-β1 and ROS contribute to fibrosis and adhesion formation through the differentiation of myofibroblasts and the
expression of profibrotic genes mediated by plasminogen activator inhibitor -1. The loss of ovarian stroma has a
detrimental effect on follicle formation. Pathogenesis is marked by a reduced blood supply and depletion of specific
growth factors that would normally be secreted by healthy stromal cells [13].
2.4. Deep Infiltrating Endometriosis
A retrospective cohort study was conducted to investigate the impact of previous surgery for endometriosis on assisted
reproductive technology (ART) cumulative live -birth rates in patients with deep infiltrating endometriosis (DE). The
study included 222 DE patients who underwent ART [7].
The diagnosis of DE was established based on strict imaging criteria and histological confirmation of the disease. Women
with a prior history of surgery for endometriosis were included, and their ART outcomes were compared with those of
patients without a history of such surgery [7].
The cohort selection process is detailed in Figure 3. From January 2008 to December 2016, a total of 222 DE patients
underwent 440 ART cycles [7].
The patient characteristics are summarized in Table 4. It is noteworthy that in 1 49 cases (67.1%), DE was associated
with ovarian endometrioma (OMA) lesions [7].
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Figure 3 The process of the cohort selection [7]
Table 4 provides detailed information on the patient characteristics and their ART outcomes. Figure 3 illustrates the
cohort selection process, ensuring a comprehensive understanding of the study design and its findings [7].
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Table 5 Patients’ characteristics in the general population (n = 222) [7]
DE, deep infiltrating endometriosis; OSIS, endometriosis; OMA, endometrioma; FSH, follicle -stimulating hormone; AFC, antral follicle count; AMH,
anti- Mu llerian hormone a Continuous data are presented as mean ± standard deviation; categorical data are presented as number (percentages).
Abbreviation
ART - Assisted Reproductive Technology
DE - Deep infiltrating Endometriosis
EFI - Endometriosis Fertility Index
GV - Germinal Vesicle
ICSI - Intra-Cytoplasmic Sperm Injection
IL - Iinterleukins
IUI - Intra-Uterine Insemination
IVF - In Vitro Fertilisation
LH - Luteinizing Hormone
MCP - Monocyte Chemoattractant Protein
MMPs - Matrix MetalloProteinases
OMA - Ovarian Endometrioma
ROS - Reactive Oxygen Species
TGF - Transforming Growth Factor
TNF-α - Tumor Necrosis Factor alpha
TVUSG - Trans-Vaginal UltraSonography
VEGF - Vascular Endothelial Growth Factor
WHO - World Health Organisation
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βhCG - Human Chorionic Gonadotropin
3. Conclusion
Heterogeneity of Endometriosis: Endometriosis is a complex and heterogeneous disorder that affects various
aspects of the reproductive cycle, including mechanical, molecular , and genetic factors.
Pathophysiological Factors Affecting Infertility: Several key pathophysiological factors contribute to infertility
associated with endometrioma. Inflammatory changes in the peritoneal cavity can alter sperm -oocyte
interaction. Distorted pelvic anatomy may impair oocyte release and utero -tubal transport. Additionally,
ovarian endometriomas can adversely affect ovarian reserve and oocyte quality.
Impact of Pro -inflammatory Microenvironment: The pro -inflammatory microenvironment in the ectopic
endometrium can alter endometrial resp onsiveness, further contributing to infertility.
Predictors of Reproductive Outcomes: While endometrioma is significantly associated with infertility, ovarian
reserve status and response to ovarian stimulation are more critical predictors of reproductive o utcomes than
the mere presence of endometrioma.
Individualized Treatment Approaches: In vitro fertilization (IVF) is the most effective treatment for infertility
in endometriosis patients. However, treatment decisions should be individualized, considering the patient’s age,
ovarian reserve, other causes of infertility, duration of infertility, and male factors.
Multidisciplinary Management: The management of patients with endometriosis -related infertility should
involve a multidisciplinary team to address the complex and multifaceted nature of the disorder
Compliance with ethical standards
Statement of informed consent
Informed consent was obtained from all individual participants included in the study.
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Authors short Biography
Roshika Nirmani Habarawa Batuwattage Fernando graduated from Riga Stradins
University with a Doctor of Medicine (MD) degree in 2020. Currently working in the Diagnostics
Radiology Department at Daugavpils Regional Hospital in Latvia.