“…Of the 17 studies that evaluated the influence of medication on decreasing pain levels, seven evaluated one drug alone 6,13,20,[26][27][28]32 and 10 evaluated drugs in combination. 10,12,15,[17][18][19][22][23][24]31 Thus, 3 studies employed contraceptives; 24,26,27 10 used isolated progestins; 10,12,13,15,17,19,20,22,23,28 5 used GnRHa, 6,10,22,24,32 one used danazol 23 and 4 used aromatase inhibitors. 12,15,19,22 The use of aromatase inhibitors for the treatment of endometriosis and its associated symptoms is justified by the fact that endometriotic tissue over-expresses aromatase, an enzyme key for the production of estrogen, noting that endometriosis is an estrogen-dependent gynecological condition.…”