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The leptomeninges include the pia mater and and arachnoid, both of which are thin and delicate in structure, as opposed to the dura mater.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoThe leptomeninges include the arachnoid and pia mater. They are the two innermost layers of tissue that cover the brain and spinal cord.
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What does arachnoiditis on an mri mean?
Arachnoiditis is inflammation of the the leptomeninges (arachnoid and pia mater). These structures wrap the surface of the brain and spinal cord. When they are inflamed, whatever the underlying cause, gadolinium injection during an MRI scan causes enhancement of the leptomeninges on T1 weighted images. Many different health problems may cause arachnoiditis (from tuberculosis to carcinomatosis to autoimmune diseases). So, strictly speaking, arachnoiditis on an MRI means the leptomeninges enhance.
Is dura mater the layer of the meninges least likely to be involved in meningitis?
"It most involves the arachnoid and pia mater, or the leptomeninges ("thin meninges")"
