Abstract
The platelet-lymphocyte ratio (PLR) and neutrophil-lymphocyte ratio (NLR), which can be easily measured from whole blood counts, are composite reflections of significant inflammatory response pathways. However, the relationship between PLR and NLR in patients with ovarian endometriosis is only partially supported by clinical evidence. This study aimed at identifying useful markers for early diagnosis by examining the relationship between PLR and NLR in patients with ovarian endometriosis. Between June 2015 and December 2022, we gathered clinical data of 10,458 endometriosis patients who visited the Gynecology Division of the Affiliated Hospital of Jining Medical University. All statistical analyses were performed using the R statistical package. The results of the univariate analysis, smoothed curve fitting, multiple regression analysis, and subgroup analysis revealed that NLR was always positively correlated with PLR. Further analysis based on the curve fitting threshold effect revealed a significant positive correlation between NLR and PLR when NLR < 2.07 (β: 34.49). Furthermore, when NLR > 2.07, there was a significant positive correlation between NLR and PLR (β: 16.93). The finding that NLR and PLR have a positive correlation confirms that inflammation plays a role in the pathogenesis of ovarian endometriosis. Therefore, PLR and NLR could be used as new biomarkers for the diagnosis of endometriosis.
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