What is leptomeningeal biopsy?

I mainly want to know the indications for this procedure.

Answer:
Isolated CNS vasculitis. Affects environment and small arteries over a diffuse CNS area, short symptomatic extracranial vessel involvement. Patients have CNS symptoms as in good health as cerebral vasculitis by angiography and leptomeningeal biopsy.
Leptomenigeal biopsy conducted on pia mater and arachnoid, the two more straitlaced components of the meninges.
You have a knit for one application in tumors of meninges or metastasis.
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The leptomeninges are the two innermost layers of the coverings over the spinal cord and brain. (The pia mater and arachnoid mater).

Indications for a biopsy would be suspicion of cancer contained by that area. It is a site where on earth cancer can spread to. Most likely, nearby would be a finding on a CT or MRI scan that would point to this.

You can't tell what it is until you hold a piece of it, and that is what a biopsy will do - offer you a piece that a pathologist can look at and diagnose.
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