title: Mature cystic teratomas of the ovary: case series from one institution over 34 years.
abstract: OBJECTIVE
  To evaluate bilaterality, complications and malignant changes of mature cystic teratomas of the ovary.
  
  
  METHODS
  Retrospective study of 501 patients operated at Hacettepe University Hospital between the years of 1964 and 1998.
  
  
  RESULTS
  The median age was 35 years (range 13-76). One hundred and six cases (21.1%) were asymptomatic. The mean tumor diameter was 7.0+/-4.5 cm. The decision for cystectomy or oophorectomy was related with the patient age, gravidity and parity. The bilaterality rate when both ovaries were evaluated histopathologically was 13.2% (44/331). Total complication rate was 10.7%, torsion being the most frequent (4.9%). The rate of malignant transformation was 1.4%.
  
  
  CONCLUSIONS
  Ovarian mature cystic teratomas are common tumors especially during the reproductive period with low rates of covert bilaterality, complications and malignant transformation. The treatment should be directed on the basis of age, fertility desire or presence of another pelvic pathology rather than the size or bilaterality.
authors.affiliation: Department of Obstetrics and Gynecology, Hacettepe University School of Medicine, Sihhiye, Ankara, Turkey. bukulmez@hacettepe.edu.tr
authors.forename: A
authors.initials: A
authors.lastname: Ayhan
authors.forename: O
authors.initials: O
authors.lastname: Bukulmez
authors.forename: C
authors.initials: C
authors.lastname: Genc
authors.forename: B S
authors.initials: BS
authors.lastname: Karamursel
authors.forename: A
authors.initials: A
authors.lastname: Ayhan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007044:Hysterectomy; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D010052:Ovariectomy; D011247:Pregnancy; D011252:Pregnancy Complications, Neoplastic; D012189:Retrospective Studies; D012422:Rupture, Spontaneous; D013724:Teratoma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D014102:Torsion Abnormality