Intracranial Ewing sarcoma

Melissa A. Mazur, Sridharan Gururangan, Julia A. Bridge, Thomas J. Cummings, Srinivasan Mukundan, Herbert Fuchs, Nicole Larrier, Edward C. Halperin

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


The occurrence of primary extraosseous Ewing sarcoma (EES) of the central nervous system (CNS) has only rarely been reported in the literature. It is important to distinguish this entity from the more common central primitive neuroectodermal tumor (PNET) of brain, since the management of these tumors is different from that of EES. We present the clinical, radiologic, and pathologic features of two cases of EES occurring in the brain. The diagnosis was further confirmed by detection of a rearrangement of the FLI1 and/or EWS gene loci in tumors from both patients using fluorescent in situ hybridization (FISH). Although rare, the possibility of EES should be considered particularly when tumors that arise near the meningeal surface of the brain and have the pathologic appearance of a PNET. Demonstration of t(11;22)(q24;q12) by molecular analysis essentially confirms the diagnosis and enables the oncologist to choose appropriate therapy.

Original languageEnglish (US)
Pages (from-to)850-856
Number of pages7
JournalPediatric Blood and Cancer
Issue number6
StatePublished - Oct 2005


  • Brain tumors
  • Cancer genetics
  • Ewing
  • FISH
  • Pathology

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Hematology
  • Oncology


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