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Table 1 Diagnostic criteria for the Diagnosis of a PACNS (modified after [9])

From: Primary angiitis of the CNS (PACNS) and Behçet disease

Definitive Diagnosis of a PACNS The definitive diagnosis of a PACNS can only be made with histologic confirmation.
Probable Diagnosis of a PACNS When no bioptic confirmation is possible, the probable diagnosis of a PACNS can only be made whith typical angiographic and MRI findings, in addition to CSF findings consistent with PACNS.