title: Primitive neuroectodermal tumor and extraskeletal Ewing sarcoma arising primarily around the spinal column: report of four cases and a review of the literature.
abstract: METHODS
  Report of four cases and a review of the literature.
  
  
  OBJECTIVE
  To study the clinical features and prognosis of primitive neuroectodermal tumor or extraskeletal Ewing sarcoma arising around the spinal column.
  
  
  BACKGROUND
  Primitive neuroectodermal tumor or extraskeletal Ewing sarcoma that originates around the spinal column is very rare, and its prognosis is very poor.
  
  
  METHODS
  Four patients were diagnosed and underwent treatment.
  
  
  RESULTS
  Although all the patients received high-dose chemotherapy with or without radiotherapy after surgery, three patients died of the disease. Only one patient who received en bloc resection of the tumor combined with multiagent chemotherapy followed by high-dose chemotherapy with peripheral blood stem cell transplantation remains alive and continues to be disease free.
  
  
  CONCLUSIONS
  The prognosis of the patients with primitive neuroectodermal tumor or extraskeletal Ewing sarcoma around the spinal column is very poor. Multiagent chemotherapy combined with en bloc resection and radiation therapy is the preferred treatment for patients with primitive neuroectodermal tumor or extraskeletal Ewing sarcoma around the spinal column.
authors.affiliation: Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. harimaya@ortho.med.kyushu-u.ac.jp
authors.forename: Katsumi
authors.initials: K
authors.lastname: Harimaya
authors.forename: Yoshinao
authors.initials: Y
authors.lastname: Oda
authors.forename: Shuichi
authors.initials: S
authors.lastname: Matsuda
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Tanaka
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Chuman
authors.forename: Yukihide
authors.initials: Y
authors.lastname: Iwamoto
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D018242:Neuroectodermal Tumors, Primitive / Q000175:diagnosis* / Q000628:therapy; D011379:Prognosis; D012512:Sarcoma, Ewing / Q000175:diagnosis* / Q000628:therapy; D013131:Spine