It is also elevated in neurodegenerative disorders such as Alzheimer???s disease and frontotemporal lobar degeneration, and in neuroinflammatory disorders such as MS. PSEUDOTUMOR CEREBRIDefective resorption of CSF into the superior sagittal sinus due to sinovenous thrombosis accounts for some cases of the syndrome of pseudotumor cerebri, which is characterized by headache, papilledema, increased C