Meningiomas are benign neoplasms that arise from cellular elements of the meninges.

Regardless of the type of cells injected, no growths were found in the meninges.

Studies with radioactively-labelled tumor cells confirmed that tumor cells reached the meninges and extracerebral organs.

In the English epidemic the brain, meninges, and the nerves were affected in a peculiar manner.

Thickening of the meninges underlying the nodule was observed but without indication of a space-occupying lesion.