OBJECTIVE: To evaluate the efficacy of treatment for infertility associated with endometriosis by selective tubal catheterization under hysteroscopy and laparoscopy. STUDY DESIGN: Eighty-eight infertile women who underwent selective tubal catheterization with insufflation of oil-soluble radiopaque dye were reviewed. The efficacy of treatment was analyzed with regard to conception rate. RESULTS: The conception rate after selective tubal catheterization was higher in women with endometriosis (60%) than in women without endometriosis (36.5%) (p < 0.05). Most women conceived within the first 4 months after treatment. No statistical difference in conception rate was observed among patients with stage I, II, or III disease. CONCLUSIONS: Selective tubal catheterization with insufflation of oil-soluble radiopaque dye was an effective treatment for infertility associated with endometriosis. (AM J OBSTET GYNECOL 1993;169:744-7.)