Colocalized cellular schwannoma and plexiform neurofibroma in the absence of neurofibromatosis. Case report

Robert J. Spinner, Bernd W. Scheithauer, Arie Perry, Kimberly K. Amrami, Ryan Emnett, David H. Gutmann

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

√The authors report on a patient without neurofibromatosis Type 1 or 2 (NF1 or NF2) and without evidence of schwannomatosis, who was found to have an unusual combination of nerve sheath tumors - a large cellular schwannoma and multifascicular involvement of a plexiform neurofibroma arising from the same site within the radial nerve and posterior cord of the infraclavicular brachial plexus. This case broadens the spectrum of combined pathological features of nerve sheath tumors. Genetic studies revealed a combined loss of neurofibromin and merlin in both regions and chromosome arm 22q deletion within the neurofibroma component only. The latter finding supports the suggestion that these were two different clonal neoplasms, and is consistent with a collision tumor pattern.

Original languageEnglish (US)
Pages (from-to)435-439
Number of pages5
JournalJournal of neurosurgery
Volume107
Issue number2
DOIs
StatePublished - Aug 1 2007

Keywords

  • Neurofibroma
  • Neurofibromatosis
  • Schwannoma

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

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    Spinner, R. J., Scheithauer, B. W., Perry, A., Amrami, K. K., Emnett, R., & Gutmann, D. H. (2007). Colocalized cellular schwannoma and plexiform neurofibroma in the absence of neurofibromatosis. Case report. Journal of neurosurgery, 107(2), 435-439. https://doi.org/10.3171/JNS-07/08/0435