CXCL8 and endometriosis: So, the basis of endometriosis pathophysiology is represented by the pro-inflammatory cytokines axis, which was named by Soares et al. [68] “the crossroads of the molecular pathways.” This process involves cytokines (tumor necrosis factor-α, interleukin-6, interleukin-8, monocyte chemoattractant protein, macrophage inhibitory factor, and granulocyte macrophage colony-stimulating factor) [69].