Enhancing infertility diagnosis through laparoscopic techniques

Background: Laparoscopy remains a key diagnostic tool in evaluating female infertility, particularly for tuboperitoneal and peritoneal pathologies that may remain undetected through non-invasive methods.

This prospective study included 80 infertile women who underwent diagnostic laparoscopy to identify underlying etiological factors. Findings were compared between primary and secondary infertility.

Tubal block, ovarian abnormalities, adhesions, and endometriosis were commonly observed. Secondary infertility demonstrated higher rates of bilateral tubal block and adhesions, while primary infertility frequently involved ovarian pathology and minimal en dometriosis. Normal findings remained an important subset, especially in primary infertility.

Diagnostic laparoscopy plays a crucial role in detecting pelvic pathology in both primary and secondary infertility. Its simultaneous diagnostic and t herapeutic capacity enhances its value in modern infertility management.

Infertility, diagnostic laparoscopy, tubal block, endometriosis

Infertility is a major global health concern affecting nearly 15% of reproductive -age co uples, with female factors contributing to almost half of all cases [1]. Despite advancements in reproductive technologies, accurate diagnosis of the underlying etiology remains crucial for appropriate management. Diagnostic laparoscopy continues to hold a n essential role in evaluating female infertility, particularly in resource -limited settings where noninvasive modalities may be insufficient [2]. Although ultrasound, hysterosalpingography (HSG), and hormonal evaluation provide initial insight, many pelvi c pathologies —especially subtle peritoneal factors—are missed without direct visualization. Studies show that nearly one -third of women with normal findings on non -invasive tests are found to have significant pelvic pathology on laparoscopy [3]. Laparoscopy enables simultaneous assessment of tubal patency, uterine contour, pelvic adhesions, peritoneal surfaces, and ovarian pathology, providing both diagnostic precision and therapeutic opportunities in the same sitting [4]. Tuboperitoneal causes of infertili ty, including pelvic adhesions, endometriosis, tubal obstruction, and sequelae of pelvic inflammatory disease, remain among the leading contributors to infertility worldwide, particularly in countries with high infection prevalence [5]. A 2023 cross -sectional analysis demonstrated that laparoscopy identified pelvic pathology in more than 60% of infertile women whose basic infertility workup was inconclusive, highlighting its indispensable value in diagnostic algorithms [6]. The distinction between primary and secondary infertility is clinically important because disease patterns differ. Primary infertility is more commonly associated with congenital tubal abnormalities or endometriosis, whereas secondary infertility is frequently linked to infections, previous obstetric events, and pelvic surgeries [7]. Laparoscopy provides high -resolution documentation of these etiological variations, enabling clinicians to characterize disease burden with greater accuracy. A recent 2024 prospective study reaffirmed that the diagnostic yield of laparoscopy remains significantly higher in secondary infertility due to post -infective tubal damage and pelvic adhesions [8]. Furthermore, the role of laparoscopy extends beyond diagnosis. Therapeutic interventions such as adhesiolysi s, cauterization of endometriotic lesions, ovarian drilling for polycystic ovary syndrome (PCOS), and tubal cannulation can be performed during the same procedure, International Journal of Clinical Obstetrics and Gynaecology https://www.gynaecologyjournal.com ~ 979 ~ significantly improving fertility outcomes [9]. Current evidence continues to support laparo scopy as the gold standard for diagnosing peritoneal and tubal factors, despite debates regarding its routine use in all infertility cases. A comprehensive 2022 review highlighted that selective laparoscopy —based on clinical, hormonal, and imaging indicato rs—optimizes diagnostic accuracy while minimizing unnecessary surgical exposure [10]. Given the variability in etiological factors between primary and secondary infertility, regional differences in disease patterns, and the limitations of alternative diagn ostic modalities, the present study aims to evaluate the various causes of female infertility using diagnostic laparoscopy and compare their relative frequency in primary and secondary infertility. This approach is expected to provide better insight into t he role of laparoscopy in contemporary infertility management and guide evidence-based decision-making.

This prospective observational study was conducted in the Department of Obstetrics and Gynecology over a defined study period, enrolling a total of 80 women presenting with infertility. Infertility was defined as the inability to conceive after at least one year of regular unprotected intercourse. Eligible participants included women between 18 and 40 years of age who had undergone ro utine infertility evaluation, including hormonal assays, transvaginal ultrasonography, semen analysis of the partner, and hysterosalpingography, yet required further assessment through diagnostic laparoscopy. Both primary and secondary infertility cases we re included to facilitate comparative analysis. Women with contraindications to laparoscopy, severe cardiopulmonary disease, known pelvic malignancy, uncontrolled pelvic infection, or those unwilling to undergo surgical evaluation were excluded from the st udy. Ethical approval was obtained from the institutional review board, and informed written consent was secured from all participants. A detailed history was recorded for each patient, including age, duration and type of infertility, menstrual pattern, pr evious pelvic surgeries, history of pelvic inflammatory disease, obstetric outcomes, and associated hormonal disorders. Clinical examination was performed to assess pelvic tenderness, uterine size, adnexal masses, and features suggestive of endometriosis or pelvic adhesions. All patients underwent diagnostic laparoscopy under general anesthesia using a standard three -port technique. A systematic evaluation of the uterus, fallopian tubes, ovaries, pelvic peritoneum, pouch of Douglas, and adhesions was carrie d out. Tubal patency was assessed using chromopertubation with methylene blue dye. Findings such as tubal obstruction, peritubal or periovarian adhesions, endometriotic implants, ovarian cysts, fibroids, and congenital anomalies were documented. Therapeuti c procedures including adhesiolysis, cauterization of endometriotic lesions, or cystectomy were performed whenever indicated and feasible during the same sitting. Data collection was performed using predesigned proformas, and all operative findings were re corded immediately after the procedure. Patients were monitored in the postoperative period for complications and discharged once stable. The primary outcome variables included the frequency and distribution of various laparoscopic findings and their compa rison between primary and secondary infertility. Statistical analysis was performed using standard software. Continuous variables were expressed as mean and standard deviation, while categorical variables were represented as frequencies and percentages. Th e chi-square test was applied to determine associations between type of infertility and laparoscopic findings, and a p -value of <0.05 was considered statistically significant.

In the present study of 80 infertile women undergoing diagnostic laparoscopy, the age distribution of the participants is shown in Table 1. The largest proportion of patients belonged to the 21 - 30-year age group, reflecting the typical reproductive age range when women most frequently seek evaluation for infertility. The proportion of women aged above 35 years was comparatively lower, although advanced age remains a recognized factor influencing both fertility potential and laparoscopic findings. Table 2 presents the distribution of cases according to the duration of married li fe. A greater proportion of women presented within 3 -5 years of marriage, indicating early medical consultation and evaluation for infertility. Fewer women reported infertility beyond 10 years of marriage, suggesting that most couples seek assistance withi n the first few years when conception does not occur spontaneously. The distribution of laparoscopic findings is shown in Table 3. Tubal factors constituted the most common abnormality, with tubal block identified in both primary and secondary infertility groups. Bilateral tubal block was more frequent among women with secondary infertility, likely reflecting post -inflammatory or post-infective sequelae. Normal laparoscopic findings were observed in a notable proportion of women, particularly in those with primary infertility, highlighting the importance of peritoneal and functional factors that may remain undetected even on laparoscopy. Other findings such as hydrosalpinx, tubo - ovarian masses, ovarian pathology including PCOS and cysts, pelvic adhesions, and endometriosis were also documented. The comparative distribution between primary and secondary infertility reflects the differing etiological patterns, with secondary infertility showing a higher frequency of tubo - peritoneal pathology. Table 1: Age Distribution in the Study (n = 80) Age Group (years) Number of Patients Percentage (%) ≤20 6 7.5% 21-25 18 22.5% 26-30 28 35% 31-35 16 20% >35 12 15% Table 2: Distribution According to Duration of Married Life (n = 80) Duration of Marriage (years) Number of Patients Percentage (%) 10 years 14 17.5% International Journal of Clinical Obstetrics and Gynaecology https://www.gynaecologyjournal.com ~ 980 ~ Table 3: Laparoscopic Findings Regarding Cause of Female Infertility (n = 80) Laparoscopic Findings Primary Infertility (n=48) Secondary Infertility (n=32) Total (%) Normal findings 14 (29.1%) 6 (18.7%) 20 (25%) Tubal block 12 (25%) 6 (18.7%) 18 (22.5%) • Unilateral 6 2 8 (10%) • Bilateral 6 4 10 (12.5%) Hydrosalpinx 2 (4.1%) 1 (3.1%) 3 (3.7%) TO Mass 1 (2%) 2 (6.2%) 3 (3.7%) Ovarian problems (PCOS, cysts) 8 (16.6%) 4 (12.5%) 12 (15%) Adhesions 2 (4.1%) 1 (3.1%) 3 (3.7%) Endometriosis 3 (6.2%) 2 (6.2%) 5 (6.2%)

The findings of this study highlight the continued importance of diagnostic laparoscopy in the evaluation of female infertility, particularly in settings where tubal and pelvic pathologies remain prevalent. The distribution of etiological factors demonstrated that tubal blockage and peritoneal factors such as adhesions and endometriosis constituted a significant proportion of abnormalities, supporting the global observation that tuboperitoneal pathology remains a major contributor to infertility in low - and middle-income regions. Recent international analyses have reaffirmed that laparoscopy remains indispensable for detecting these subtle pelvic abnormalities, especially when non -invasive diagnostic methods fail to provide sufficient information [11]. The high rate of tubal block observed in both primary and secondary infertility in this study aligns with recent findings suggesting an increasing trend of tubal disease due to persistent pelvic infections and post -inflammatory damage in many populations [12]. Differences in the etiological pattern between primary and secondary infertility were also evident. Secondary infertility was more frequently associated with bilateral tubal block, adhesions, and tubo -ovarian masses, reflecting the cumulative impact of postpartum infections, pelvic inflammatory disease, and prior pelvic surgeries. Contemporary evidence supports this pattern, noting that secondary infertility is disproportionately linked to preventable reproductive health conditions such as post - infectious t ubal damage, which remains a major burden in developing countries [13]. Such findings reinforce the necessity of early gynecologic care and timely treatment of pelvic infections to reduce the long -term sequelae affecting reproductive outcomes. The identifi cation of endometriosis and ovarian pathology among women with primary infertility further underscores the role of laparoscopy in diagnosing conditions that may remain silent on imaging. Endometriosis, in particular, is known for its subtle presentation an d frequently requires laparoscopic confirmation for accurate staging and targeted management. Recent laparoscopic studies have emphasized that minimal or mild endometriosis is often underdiagnosed, yet it carries significant implications for fertility due to altered peritoneal physiology and pelvic adhesions [14]. Laparoscopy allows both diagnosis and immediate surgical correction, offering a dual advantage that enhances future fertility potential. The presence of a substantial proportion of normal laparosc opic findings, especially among women with primary infertility, highlights the multifactorial and sometimes unexplained nature of reproductive failure. Even in the absence of structural abnormalities, functional, hormonal, or immunological factors may cont ribute to infertility. This observation mirrors recent data demonstrating that 20 -30% of infertile women may have normal pelvic anatomy on laparoscopy, emphasizing that a comprehensive evaluation must include both laparoscopic and non-laparoscopic paramete rs [15]. Together, these findings reiterate that while diagnostic laparoscopy remains the gold standard for assessing tubal and peritoneal pathology, it must be integrated with a holistic infertility workup to maximize diagnostic accuracy and treatment planning.

Diagnostic laparoscopy continues to play a vital role in identifying the underlying causes of female infertility, particularly in relation to tubal and peritoneal pathology. In this study, tubal block, adhesions, ovarian disorders, and endometriosis were significant contributors, with differing frequencies observed between primary and secondary infertility. Laparoscopy provided direct visualization and, when applicable, simultaneous therapeutic intervention, reinforcing its value as both a diagnostic and corrective tool. These findings support the continued use of selective diagnostic laparoscopy as part of a structured infertility evaluation, especially in regions where pelvic infections and delayed reproductive care remain prevalent.

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