Hyperostosis in meningiomas: MR findings in patients with recurrent meningioma of the sphenoid wings.
OBJECTIVE
We used MR imaging to analyze retrospectively the pattern of hyperostosis occurring concomitantly with recurrent sphenoid wing meningiomas.


METHODS
Bone involvement was compared in 12 corresponding CT and MR studies of 10 female patients with sphenoid wing meningiomas recurrence after earlier surgical treatment. Four of these had histologically confirmed meningiomatous infiltration of the bone.


RESULTS
All patients had CT findings of localized hyperostosis of parts of the sphenoid wings. MR revealed inhomogeneous areas of slightly increased signal intensity in hyperostotic bone on T2-, proton density- and T1-weighted sequences. In nine of 10 patients, segments of the hyperostotic bone showed different degrees of gadolinium enhancement.


CONCLUSIONS
Because earlier studies have revealed high incidences of meningiomatous bone infiltration in sphenoid wing meningiomas, and because infiltration was confirmed in four of our patients, we postulate that the gadolinium enhancement in the area of hyperostosis may be related to meningiomatous bone infiltration.
Terstegge
K
K
Department of Radiology, Rudolf Virchow Hospital, Freie Universität, Berlin, Germany.
Schörner
W
W
Henkes
H
H
Heye
N
N
Hosten
N
N
Lanksch
W R
WR
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D015576:Hyperostosis / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008579:Meningioma / Q000000981:diagnostic imaging* / Q000503:physiopathology; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging* / Q000503:physiopathology; D012888:Skull Neoplasms / Q000000981:diagnostic imaging* / Q000503:physiopathology; D013100:Sphenoid Bone / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed