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Asymptomatic brain meningiomas are often diagnosed incidentally during investigations for minor neurologic symptoms. Their management is controversial because not enough data have been collected on the growth rate,1–7⇓⇓⇓⇓⇓⇓ and it may vary according to tumor location or patient age. We reviewed the natural history of conservatively treated brain meningiomas with a focus on the features associated with tumor growth.
Patients and methods.
The files of 43 patients with 51 brain meningiomas that were treated conservatively at Beilinson hospital between 1989 and 1999 were reviewed. The diagnosis was based on a finding of an extra-axial dural-based enhancing mass on CT or MRI. Follow-up was performed 6 to 9 months after diagnosis and yearly thereafter. Tumor size was calculated according to largest diameter in the anterio-posterior, medio-lateral, or oblique dimension (perpendicular analysis). Growth was defined as a change in tumor size of at least 2 mm. The tumors were classified as …
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