title: The CT triad of malignancy in meningioma--redefinition, with a report of three new cases.
abstract: 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.
authors.affiliation: Department of Radiodiagnosis and Imaging, Vardhman Mahavir Medical College and Safdarjung Hospital, 110029 New Delhi, India. shabnamgrover@yahoo.com
authors.forename: S B
authors.initials: SB
authors.lastname: Grover
authors.forename: A
authors.initials: A
authors.lastname: Aggarwal
authors.forename: P Singh
authors.initials: PS
authors.lastname: Uppal
authors.forename: R
authors.initials: R
authors.lastname: Tandon
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000000981:diagnostic imaging*; D008579:Meningioma / Q000000981:diagnostic imaging*; D008875:Middle Aged; D010014:Osteolysis / Q000000981:diagnostic imaging; D012886:Skull / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed