Meningiomas originate from which tissue?

• A. Choroid plexus
• B. Meninges
• C. Glial cells
• D. Neuron

Answer: (B)

The key idea is that meningiomas come from the coverings of the brain—the meninges. Specifically, they arise from the arachnoid layer’s cells (arachnoid cap cells) and behave as extra-axial tumors that typically sit on or near the brain’s surface, often attaching to the dura.

This origin explains why meningiomas are usually found outside the brain tissue itself and often have a dural attachment seen on imaging as a dural tail. The other tissue types correspond to different tumor origins: choroid plexus tumors arise from the choroid plexus epithelium within the ventricles; glial tumors originate from glial cells within the brain parenchyma; neuronal tumors arise from neurons.