Primary aim of this study is to evaluate the change in systemic inflammation parameters after surgery for superficial, ovarian or deep endometriosis. Secondary objectives focus on correlating these parameters to clinical outcomes, in patients with pelvic pain, and reproductive outcomes, in women desiring offspring. Participants already scheduled for surgery as part of their endometriosis care will be followed regarding the abovementioned outcomes after calculation of pre and postsurgical systemic inflammation markers (neutrophil to lymphocyte ratio; platelet to lymphocyte ratio and lymphocyte to monocyte ratio)