MRI of intracranial meningiomas: correlations with histology and physical consistency.

Magnetic resonance imaging (MRI) appearances of 43 intracranial meningiomas were reviewed and correlated with their histology and consistency at surgery and on pathological examination. There was a statistically significant prevalence of hard tumours within the fibroblastic subtypes. No statistically significant correlation between signal intensity and histology or consistency was found. A meningioma hyperintense on T2-weighted images is, however, unlikely to be fibroblastic or hard.