The CT triad of malignancy in meningioma—redefinition, with a report of three new cases


The CT triad of extracranial soft-tissue tumour, underlying osteolysis and an intracranial tumour was reported as a sign of malignancy in meningioma, by Younis and Sawaya in 1992. We report the clinical and CT spectrum of three new cases with a similar triad, confirmed to be malignant meningioma. However, we redefine this sign and suggest that this triad is an unequivocal indicator of malignancy in meningioma, provided metastases have been excluded.

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Correspondence to S. B. Grover.

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Grover, S.B., Aggarwal, A., Uppal, P.S. et al. The CT triad of malignancy in meningioma—redefinition, with a report of three new cases. Neuroradiology 45, 799–803 (2003).

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  • Malignant meningioma
  • Extracranial tumour
  • Osteolysis
  • Computed tomography