title: [Isolated central nervous system vasculitis manifesting as a pseudotumor].
abstract: Vasculitis is characterized by inflammation of the vessel walls, with or without necrosis, that causes narrowing and occasionally obstruction of the vessels. Vasculitis can be a primary process or it can occur secondary to other disease. Isolated central nervous system vasculitis (ICNSV) is a rare type of primary vasculitis that predominately affects the supratentorial regions. The clinical presentation and imaging findings are unspecific and diagnosis is made by exclusion and biopsy. We present a case manifesting as a pseudotumor in the posterior fossa on computed tomography and magnetic resonance imaging. The diagnosis was after biopsy, and the patient evolved favorably after treatment.
authors.affiliation: Servicio de Radiodiagnóstico, Hospital de León, León, España. obalboa@hleo.sacyl.es
authors.forename: O
authors.initials: O
authors.lastname: Balboa
authors.forename: L
authors.initials: L
authors.lastname: Hernández
authors.forename: A I
authors.initials: AI
authors.lastname: García
authors.forename: J
authors.initials: J
authors.lastname: Tejada
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D015192:Infratentorial Neoplasms / Q000175:diagnosis; D008297:Male; D020293:Vasculitis, Central Nervous System / Q000175:diagnosis*