title: Diagnostic evaluation of metastatic placental site trophoblastic tumor.
abstract: BACKGROUND
  Placental site trophoblastic tumor, a type of gestational trophoblastic disease, is a rare tumor composed of intermediate trophoblasts.
  
  
  METHODS
  We report the case of a 47-year-old woman with 1 year of amenorrhea who presented with cough in the absence of gynecologic symptoms. She was found to have diffuse pulmonary metastases that were nonhypermetabolic on positron emission tomography (PET) scan. She was diagnosed with Stage 3 metastatic placental site trophoblastic tumor 12 years after her most recent pregnancy.
  
  
  CONCLUSIONS
  Placental site trophoblastic tumor is an unusual malignancy that may present remotely from antecedent gestational events. The relatively slow growth rate of this tumor may explain the lack of PET findings in our case.
authors.affiliation: From the Georgetown University Hospital, Washington, DC.
authors.forename: Tara
authors.initials: T
authors.lastname: Kelly
authors.forename: Colette
authors.initials: C
authors.lastname: Alvis
authors.forename: Malak
authors.initials: M
authors.lastname: Abedalthagafi
authors.forename: Willard
authors.initials: W
authors.lastname: Barnes
mesh_terms: D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000556:secondary* / Q000628:therapy; D008875:Middle Aged; D011247:Pregnancy; D018245:Trophoblastic Tumor, Placental Site / Q000175:diagnosis* / Q000556:secondary* / Q000628:therapy; D014594:Uterine Neoplasms / Q000473:pathology* / Q000628:therapy