Intra- and Extradural Tumor: Dumbbell Schwannoma

  • Michael Salcman
  • Roberto C. Heros
  • Edward R. LawsJr.
  • Volker K. H. Sonntag


Schwannomas and neurofibromas together comprise one third of primary spinal cord tumors and show a predilection for the thoracic spine over the lumbar and cervical spine. Characteristically, these tumors originate from the sensory nerve root intrathecally. The tumor then may extend along the nerve peripherally through the intravertebral neural foramina. The extradural portion of the well-encapsuled tumor may reach an extreme size. A standard radiograph of the spine may show erosion or complete absence of the pedicles and lamina as well as vertebral scalloping.


Nerve Root Radicular Artery Extreme Size Exit Nerve Root Arachnoid Adhesion 
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Copyright information

© Springer-Verlag New York, Inc. 2004

Authors and Affiliations

  • Michael Salcman
    • 1
  • Roberto C. Heros
    • 2
  • Edward R. LawsJr.
    • 3
  • Volker K. H. Sonntag
    • 4
    • 5
  1. 1.Sinai HospitalBaltimoreUSA
  2. 2.Department of Neurological SurgeryUniversity of Miami School of MedicineMiamiUSA
  3. 3.Department of Neurological SurgeryUniversity of Virginia Health Sciences CenterCharlottesvilleUSA
  4. 4.University of ArizonaUSA
  5. 5.Barrow Neurological InstitutePhoenixUSA

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