“…Primary angiitis of the central nervous system (PACNS) is a rare inflammatory vascular condition of unknown etiology that affects only the blood vessels in the central nervous system (CNS)—the brain, spinal cord and meninges [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. People of all ages are affected, but the highest incidence is found in the sixth decade of life [ 1 , 2 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Some studies describe similar incidence between both sexes [ 1 , 6 , 10 ], while other authors highlight a slight male predominance [ 2 , 4 , 8 , 9 ].…”