title: Relapsed gestational trophoblastic neoplasia: A 20-year experience.
abstract: OBJECTIVE
  To review relapsed gestational trophoblastic neoplasia (GTN).
  
  
  METHODS
  Patients who had relapsed GTN between 1978 and 2001 at Queen Mary Hospital were included in the study. Records were reviewed and data analyzed regarding treatment, follow-up and survival.
  
  
  RESULTS
  Eighteen patients with relapsed GTN were identified. Patients' ages ranged from 21 to 56 years, with a median of 34. Eight were classified as low risk, 1 as medium risk and 9 as high risk at the time of diagnosis. Seven, 3 and 8 patients were treated with single-, dual- and multiple-agent chemotherapy, respectively. The median interval between remission and relapse was 6.5 months (range, 1-132). The time interval to relapse did not correlate with patient mortality (Mann-Whitney U test, p = 0.873). Four patients died of the disease, and all of them were classified and treated as low risk at the time of diagnosis. Three were lost to follow-up at some point. The remaining patient had relapsed choriocarcinoma and developed progressive disease despite intensive multiple-modality treatment. The overall survival rate for relapsed GTN was 77.8%.
  
  
  CONCLUSIONS
  Patients with relapsed GTN are salvageable. Failure of treatment seems attributable to patients who defaulted treatment or follow-up and presented late with massive disease.
authors.affiliation: Department of Obstetrics and Gynaecology, University of Hong Kong, Hong Kong, China. hysngan@hkucc.hku.hk
authors.forename: Hextan Y S
authors.initials: HY
authors.lastname: Ngan
authors.forename: Kar-Fai
authors.initials: KF
authors.lastname: Tam
authors.forename: Ka-Wai
authors.initials: KW
authors.lastname: Lam
authors.forename: Karen K L
authors.initials: KK
authors.lastname: Chan
mesh_terms: D000328:Adult; D018572:Disease-Free Survival; D005260:Female; D031901:Gestational Trophoblastic Disease / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality / Q000628:therapy; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D008499:Medical Records; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality / Q000628:therapy; D011247:Pregnancy; D012189:Retrospective Studies; D014594:Uterine Neoplasms / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality / Q000628:therapy