title: [Study on pathological characteristics of eutopic endometrium in endometriosis].
abstract: OBJECTIVE
  To study the pathologic characteristics of eutopic endometrium in patients with endometriosis.
  
  
  METHODS
  Pathologic characteristics of eutopic endometrium were studied in 176 patients with endometriosis in Peking Union Medical College Hospital from January 2007 to December 2008 retrospectively.
  
  
  RESULTS
  About 72.2% (127/176) of eutopic endometrium were in proliferative phase, 19.9% (35/176) of were observed as endometrial polyp, including 32 cases with simple endometrial polyp and 3 cases with abnormal hyperplasia combined with endometrial polyp. And 4.0% (7/176) showed abnormal hyperplasia. The incidence of pathologic changes in eutopic endometrium was 22.2% (39/176). Among 53 endometriosis patients combined with infertility, the incidence of pathologic changes of eutopic endometrium was 35.9% (19/53), which was significantly higher than 16.3% in non-infertile patients (χ(2) = 8.24, P = 0.004). Among 65 cases with irregular menstruation, the incidence of endometrial polypus and endometrial hyperplasia were 20.0% (13/65) and 10.8% (7/65), which were significantly higher than 17.1% (19/111) and 0 in normal menstruation patients (χ(2) = 13.839, P = 0.003).
  
  
  CONCLUSIONS
  The eutopic endometrium of endometriosis were in proliferative phase state. The pathologic changes of eutopic endometrium were more in patients combined with infertility and irregular menstruation.
authors.affiliation: Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing 100730, China.
authors.forename: Jia-li
authors.initials: JL
authors.lastname: Tong
authors.forename: Jing-he
authors.initials: JH
authors.lastname: Lang
authors.forename: Lan
authors.initials: L
authors.lastname: Zhu
authors.forename: Rui-e
authors.initials: RE
authors.lastname: Feng
authors.forename: Quan-cai
authors.initials: QC
authors.lastname: Cui
mesh_terms: D000328:Adult; D004714:Endometrial Hyperplasia / Q000453:epidemiology* / Q000209:etiology; D004715:Endometriosis / Q000150:complications / Q000473:pathology*; D004717:Endometrium / Q000473:pathology*; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000209:etiology; D008599:Menstruation Disturbances / Q000209:etiology; D008875:Middle Aged; D011127:Polyps / Q000453:epidemiology* / Q000209:etiology; D012189:Retrospective Studies