With respect to the chronic inflammatory microenvironment that occurs during endometriosis, a complex cytokine pattern in the peritoneal fluid has been described, including pro‐inflammatory cytokines (IL‐1β, IL‐6, IL‐8, and TNF‐α) as well as the anti‐inflammatory mediator IL‐10 8, 9. This evidence concerns the gene IL10 and endometriosis.