Hyperostotic meningioma with minimal tumor invasion into the skull - Case report

Jun Hong Min, Shin Hyuk Kang, Jang Bo Lee, Yong Gu Chung, Hoon Kap Lee

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


A 56-year-old man presented with a meningioma associated with hyperostotic bone containing little tumor cell infiltration. The patient presented with a growing mass on his right forehead and exophthalmos. Computed tomography (CT) taken 4 years previously revealed only hyperostosis without intracranial lesion. Repeat CT revealed an enhanced intracranial mass with overlying diffuse hyperostosis extending extracranially. The tumor and affected bone were widely removed. Histological examination confirmed rhabdoid meningioma in the intracranial and extracranial lesion. However, most of the hyperostotic bone showed no tumor cell infiltration. The cause of hyperostosis associated with meningioma is unclear, but tumor invasion is the generally accepted cause. In this case, hyperostosis occurred without tumor cell infiltration so another mechanism was probably involved. The extracranial extension occurred despite the disproportionately small tumor without global tumor cell infiltration of the bone or bony erosion.

Original languageEnglish
Pages (from-to)480-483
Number of pages4
JournalNeurologia Medico-Chirurgica
Issue number9
Publication statusPublished - 2005 Sept
Externally publishedYes


  • Extracranial extension
  • Hyperostosis
  • Tumor cell infiltration

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology


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