# Endometriosis Among Surgical Specimens in Gabon: A 35-Year Retrospective Study

## TL;DR

This study is the first to report on endometriosis in Gabon, finding it affects 7.3% of women, with higher rates in older age groups.

## Contribution

The first published data on endometriosis prevalence in Gabon, highlighting its significance as a public health issue.

## Key findings

- Endometriosis prevalence was 7.3% among surgical specimens from 1987 to 2022.
- Age groups 35–50 and 51–89 had the highest risk for endometriosis.
- The uterus was the most affected organ, and benign tumors were a significant risk factor.

## Abstract

Endometriosis is a chronic inflammatory gynecological disease affecting many women worldwide. In Gabon, data on this disease has never been published. Created in 1978, the laboratory of the Department of Pathological Anatomy at the University of Health Sciences was the only laboratory for histological analysis throughout all the country until 2009.

A descriptive and analytical retrospective study was conducted using data from the medical records of women whose operation specimen samples were examined between 1987 and 2022.

A total of 6666 files were collected for the period between 1987 and 2022. The mean age of the patients was 38.0 ± 10.8 years. The proportion of endometriosis between 1987 and 2022 was 7.3% [6.7–7.9]. The year 2004 had the highest prevalence (23.2%). Endometriosis was significantly elevated in patients aged 36 to 50 years (10.8%), followed by those aged 51 years and over (9.6%) (p < 0.001). The uterus was the most resected surgical part (40.3%) and the most affected organ (72.6%). Malignant (23.9%) and benign (51.4% including 29.6% leiomyomas) tumors were the most common pathologies. In the final model, age, in particular the groups of [35–50 years] (OR = 11.4 (95% CI [2.8–46.5]) and [51–89 years] (OR = 11.2 (95% CI [2.7–46.1]), salpingitis (OR = 2.6 (95% CI [2.1–3.3]), and benign tumors (OR = 1.3 (95% CI [1.1–1.6]) were risk factors for the occurrence of endometriosis.

This study is the first published study, which reveals that endometriosis is a health issue in Gabon. In order to better characterize this pathology in the country, it would be wise to conduct prospective studies, including Knowlege Attitude and Pratice's (KAP) studies.