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BACKGROUND:Endometriosis, arising de novo, is believed to be uncommon in women who have undergone bilateral tubal ligation because the occluded tube prevents outflow of blood and menses.CASE:A woman 10-year status-post bilateral tubal ligation suffered from dysmenorrhea and menorrhagia that began within 1 year after sterilization. At the time of bilateral tubal ligation, no endometriosis was observed...