Endometriosis in episiotomy scar with anal sphincter involvement

A case of endometriosis in an episiotomy scar with involvement of the external anal sphincter is presented. The clinical, operative, and pathologic findings are reported. The question of etiology and treatment is discussed, and the literature is reviewed. Wide excision of the ectopic endometrial tissue with primary reconstruction of the external sphincter was curative, and the functional result was excellent. It is suggested that this treatment policy should be recommended for these cases.