Laparoscopic Excision of Endometriosis: a Randomized, Placebo-Controlled Trial • Abbott J et al. 2004;82:878-884. Thirty-nine women were randomized to receive either a diagnostic procedure or full excisional surgery. Eighty percent of the women who received excisional surgery reported an improvement in symptoms whereas 32% of women in the placebo group reported an improvement. Those who underwent excisional surgery also reported significant improvement in quality of life.
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