title: [Spinal dural arteriovenous fistulae associated with perimedullary arteriovenous fistulae: imaging characteristics and surgical treatment].
abstract: OBJECTIVE
  To enhance the clinical doctors' cognizance of atypical spinal dural arteriovenous fistulae (SDAVFs) associated with perimedullary anteriovenous fistulae (PMAVFs).
  
  
  METHODS
  The clinical imaging and surgical therapy of 3 patients with PMAVFs were analyzed retrospectively.
  
  
  RESULTS
  The clinical presentations of the 3 patients were not significantly different from those of typical SDAVFs. They were verified by repeated spinal angiography that the anterior spinal artery (ASA) is supplied to the drainage-vein. The 3 patients were treated surgically. First two operations were performed to eliminate the supply of ASA and dural branch, then the supply of the dural branch was amputated, and finally both the ASA and dural branch supplies were excised successfully. Clinical symptoms of the 3 patients were improved after treatment.
  
  
  CONCLUSIONS
  It is necessary to perform thorough spinal angiography in patients with SDAVFs to exclude another fistula. The key point in the treatment of such patients is successfully to terminate both the spinal feeder and dural branch feeder.
authors.affiliation: Department of Neurosurgery, Zhucheng People's Hospital, Shandong 262200, China.
authors.forename: Jiachun
authors.initials: J
authors.lastname: Liu
authors.forename: Hongtao
authors.initials: H
authors.lastname: Xiang
authors.forename: Feng
authors.initials: F
authors.lastname: Ling
authors.forename: Hongqi
authors.initials: H
authors.lastname: Zhang
authors.forename: Zhongrong
authors.initials: Z
authors.lastname: Miu
mesh_terms: D000328:Adult; D000368:Aged; D001164:Arteriovenous Fistula / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013116:Spinal Cord / Q000601:surgery*; D013514:Surgical Procedures, Operative