title: [Morphological study of human arachnoid granulations with reference to their classification].
abstract: Stereomicroscopic and microscopic study showed human arachnoid granulations with different morphology that we classified in simple and lobate. Simple granulations were small and completely involved by fibrous capsule that delimited a continuous subdural space from the pedicle to the apex. Lobate granulations were bigger than the simple; in the apex the fibrous capsule was thinner than in other regions, and fused with granulation periphery causing interruption of subdural space. Simple granulations might be an initial development stage; lobate granulations would represent a higher development stage, with ideal morphologic structure for absorption of the CSF.
authors.affiliation: Departamentos de Ciências Morfofisiológicas, Universidade Estadual de Maringá (UEM), Maringá PR, Brasil.
authors.forename: M H
authors.initials: MH
authors.lastname: Miranda-Neto
authors.forename: R M
authors.initials: RM
authors.lastname: Brancalhão
authors.forename: R P
authors.initials: RP
authors.lastname: Chopard
authors.forename: S L
authors.initials: SL
authors.lastname: Molinari
mesh_terms: D000328:Adult; D001099:Arachnoid / Q000648:ultrastructure*; D002555:Cerebrospinal Fluid / Q000502:physiology; D004388:Dura Mater / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008297:Male; D008854:Microscopy, Electron
vernacular_title: Estudo morfológico das granulações aracnóides humanas com referência a sua classificação.