title: Multifocal osteolytic lesions within lumbar spine in a middle-aged Chinese woman: a benign metastasizing leiomyoma?
abstract: METHODS
  Case report.
  
  
  OBJECTIVE
  To describe a case presented as osteolytic lesions involving 2 inconsecutive lumbar, which was pathologically proved to be of smooth muscular origin.
  
  
  BACKGROUND
  Smooth muscle tumor of uncertain malignant potential (STUMP) could be diagnosed when the neoplasm showed some malignant behavior, whereas its histologic image revealed very low malignance. A 47-year-old woman presented with low back pain and numbness of the left lower extremity attributable to osteolytic lesions in the second and fourth lumbar vertebral bodies, which was subsequently diagnosed as STUMP. A benign metastasizing leiomyoma was highly suspected.
  
  
  METHODS
  Clinical, pathologic, and radiologic characters of the patient with STUMP confined within the lumbar spine were retrospectively reviewed. A mini review was also conducted.
  
  
  RESULTS
  We describe the first spine-confined case of STUMP.
  
  
  CONCLUSIONS
  Significant new information in the growing literature of this rare and newly identified diagnosis has addressed the need for orthopedists to consider the STUMP diagnosis.
authors.affiliation: Orthopaedic Department, Huashan Hospital, Fudan University, Shanghai, China.
authors.forename: Li-xun
authors.initials: LX
authors.lastname: Wang
authors.forename: Fei-zhou
authors.initials: FZ
authors.lastname: Lv
authors.forename: Xin
authors.initials: X
authors.lastname: Ma
authors.forename: Jian-yuan
authors.initials: JY
authors.lastname: Jiang
mesh_terms: D005260:Female; D006801:Humans; D007889:Leiomyoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D010014:Osteolysis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D011379:Prognosis; D011859:Radiography; D018235:Smooth Muscle Tumor / Q000175:diagnosis* / Q000556:secondary / Q000601:surgery; D013125:Spinal Neoplasms / Q000175:diagnosis* / Q000556:secondary / Q000601:surgery; D016896:Treatment Outcome