title: Metastatic epithelioid trophoblastic tumor involving the spine.
abstract: METHODS
  This is a single case-based report.
  
  
  OBJECTIVE
  We report the first case of epithelioid trophoblastic tumor (ETT) presenting as primary metastasis to the spine.
  
  
  BACKGROUND
  ETT is an extremely rare form of gestational trophoblastic neoplasm with less than 100 cases reported in the literature. A 36-year-old, postpartum woman presented with severe low back pain and was found to have a contrast-enhancing lesion in lower thoracic spine subsequently confirmed as ETT.
  
  
  METHODS
  The patient data, history, clinical examination findings, laboratory, and histopathology data and imaging studies were retrospectively reviewed and findings reported. A literature search using Pubmed and Cochrane database was conducted.
  
  
  RESULTS
  We described the first case of an ETT to present as a primary metastasis to the spine.
  
  
  CONCLUSIONS
  This first report of metastasis of ETT to the spine adds significant new information to the growing literature of this rare and newly identified tumor. It also alerts the neurosurgeon into considering the diagnosis with appropriate clinical presentation. As more number of cases of nervous system involvement with this tumor are reported, crucial information on prognostic factors and treatment regimens will emerge.
authors.affiliation: Department of Neurosurgery, University of New Mexico, Albuquerque, NM, USA.
authors.forename: Muhammad Omar
authors.initials: MO
authors.lastname: Chohan
authors.forename: Tausif
authors.initials: T
authors.lastname: Rehman
authors.forename: Lisa A
authors.initials: LA
authors.lastname: Cerilli
authors.forename: Kelly
authors.initials: K
authors.lastname: Devers
authors.forename: Rafael
authors.initials: R
authors.lastname: Medina-Flores
authors.forename: Paul
authors.initials: P
authors.lastname: Turner
mesh_terms: D000328:Adult; D003131:Combined Modality Therapy; D004358:Drug Therapy; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000209:etiology; D008279:Magnetic Resonance Imaging; D019635:Neurosurgical Procedures; D011247:Pregnancy; D011843:Radiculopathy / Q000209:etiology; D011859:Radiography; D013125:Spinal Neoplasms / Q000175:diagnosis / Q000556:secondary* / Q000628:therapy; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging; D014328:Trophoblastic Neoplasms / Q000175:diagnosis / Q000556:secondary* / Q000628:therapy; D014594:Uterine Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy