VCAM1 and endometriosis: The reduction in VCAM-1 and VEGF, and the increase in sICAM-3 and Ang-1, have all been associated with endometriosis and, while no subject with UI had overt endometriosis, it is interesting to postulate that these women may have subclinical endometriosis, which would be in accord with the high prevalence of endometriosis reported in UI [6].