title: [Clinical aspects of mature ovarian teratoma: result of 695 cases].
abstract: OBJECTIVE
  To evaluate the clinical aspects of mature ovarian teratoma.
  
  
  METHODS
  We retrospectively studied 695 patients operated in PUMC Hospital between January 1990 and December 2000.
  
  
  RESULTS
  Laparoscopy surgery had shorter hospitalization day, less blood loss during surgery, shorter operation time compared with laparotomy (P < 0.001). Routine contralateral wedge resection was done in 601 cases, among which 459 had normal inspection and palpatation. Only one (0.22%) was pathologically confirmed bilateral tumor. Torsion was the major complication (7.5%). Average tumor size of torsion was (10.2 +/- 4.5) cm. Probability of torsion increased as the tumor enlarged, which was less than 4.4% when the tumor size was less than 6 cm and greater than 10% if size greater than 8 cm. Rupture, infection, and malignant transformation were rare.
  
  
  CONCLUSIONS
  Laparoscopy is superior to laparotomy in the treatment of mature ovarian teratoma. If the contralateral ovarian is within normal configuration, contralateral wedge resection is unnecessary. When the tumor size is greater than 8 cm in diameter, it will have more chance to twist.
authors.affiliation: Department of Obstetrics and Gynecology, PUMC Hospital, CAMS and PUMC, Beijing 100730, China. obgyn@sina.com
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Gong
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Leng
authors.forename: Jing-He
authors.initials: JH
authors.lastname: Lang
authors.forename: Rong-Li
authors.initials: RL
authors.lastname: Huang
authors.forename: Zhu-Feng
authors.initials: ZF
authors.lastname: Liu
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: Sun
authors.forename: Lan
authors.initials: L
authors.lastname: Zhu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D010535:Laparoscopy; D007813:Laparotomy; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000150:complications / Q000473:pathology / Q000601:surgery*; D012189:Retrospective Studies; D013724:Teratoma / Q000150:complications / Q000473:pathology / Q000601:surgery*; D014102:Torsion Abnormality / Q000209:etiology / Q000601:surgery