title: Spontaneous thoracic ventral spinal subdural hematoma mimicking a tumoral lesion: a case report.
abstract: BACKGROUND
  Spinal subdural hematoma is rare and can cause serious neurological symptoms. Sometimes, idiopathic spinal subdural hematoma can spontaneously occur without any identifiable underlying etiologies. In this report, we present such an uncommon case of paraplegia caused by idiopathic spinal subdural hematoma that was successfully managed by laminectomy.
  
  
  METHODS
  A 45-year-old Chinese woman presented with sudden onset of progressive asthenia and numbness in both lower extremities, accompanied by difficulty in micturition. An initial non-contrast spinal magnetic resonance imaging at a local hospital suggested a spinal subdural tumoral hematoma at the T9 level. She was referred to our hospital and an emergency laminectomy from T8 to T10 was performed 22 hours after onset of her initial symptoms. However, nothing but a hematoma was identified during the operation, and a final diagnosis of spontaneous acute spinal subdural hematoma was concluded. She had partial return of sensations and voluntary movement after the operation.
  
  
  CONCLUSIONS
  On imaging findings, spinal subdural hematoma could manifest as focal and independent from the dura matter, and, therefore, it should be included in the differential diagnosis of medullary compressive lesions.
authors.affiliation: Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China. zyjbull@gmail.com.
authors.forename: Yong-Jian
authors.initials: YJ
authors.lastname: Zhu
authors.affiliation: Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China. pengdeqing@zju.edu.cn.
authors.forename: De-Qing
authors.initials: DQ
authors.lastname: Peng
authors.affiliation: Department of Neurosurgery, Ningbo No.2 Hospital, Ningbo, Zhejiang, 315010, China. fshen@aliyun.com.
authors.forename: Fang
authors.initials: F
authors.lastname: Shen
authors.affiliation: Department of Physiology, Zhejiang University School of Medicine, Hangzhou, 310009, China. wanglinlin2002@hotmail.com.
authors.forename: Lin-Lin
authors.initials: LL
authors.lastname: Wang
authors.affiliation: Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China. t.zhuxiao@163.com.
authors.forename: Zhu-Xiao
authors.initials: ZX
authors.lastname: Tang
authors.affiliation: Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China. neurosurgery@zju.edu.cn.
authors.forename: Jian-Min
authors.initials: JM
authors.lastname: Zhang
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D046649:Hematoma, Subdural, Spinal / Q000150:complications / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007796:Laminectomy; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010264:Paraplegia / Q000209:etiology