title: Malignant meningitis presenting as pseudotumor cerebri.
abstract: Malignant leptomeningitis can present as the clinical syndrome of pseudotumor cerebri due to infiltration of arachnoid villi in the superior sagittal sinus. We show that malignant pachymeningitis can also present with pseudotumor cerebri, likely due to cerebral venous hypertension from transverse sinus compression. We present 3 cases of pseudotumor cerebri due to pachymeningeal or leptomeningeal metastases and discuss the mechanism of intracranial hypertension in such cases, its diagnosis and treatment.
authors.affiliation: Department of Neurology, Royal Prince Alfred Hospital, Sydney, Australia. rebekahahmed@gmail.com
authors.forename: R M
authors.initials: RM
authors.lastname: Ahmed
authors.forename: G M
authors.initials: GM
authors.lastname: Halmagyi
mesh_terms: D000368:Aged; D005773:Gastroscopy; D006801:Humans; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D055756:Meningeal Carcinomatosis / Q000175:diagnosis* / Q000209:etiology; D008581:Meningitis / Q000175:diagnosis* / Q000209:etiology; D011471:Prostatic Neoplasms / Q000150:complications; D011559:Pseudotumor Cerebri / Q000503:physiopathology*; D013274:Stomach Neoplasms / Q000150:complications