title: [Cerebral cortex in normal pressure hydrocephalus: an electron microscopy study (author's transl)].
abstract: A cortical biopsy was taken at the time when ventricular pressure was measured, or a ventriculo-atrial shunt placed, in 11 patients with Normal Pressure Hydrocephalus (N.P.H.), and was studied with the electron microscope. In 9 cases, a rather typical electron microscopic picture with marked increase of extracellular space in an otherwise normal cortical neuropil was observed. 2 patients did not exhibit this pattern and, coincendentally, did not benefit from the placing of the shunt. As a control, about 600 cortical biopsies that had been taken for other reasons were reviewed. In the group, there were only 3 cortices that had a pattern of increased extracellular space similar to the described in N.P.H. On review of the clinico-pathologic data of these cases, it was felt that all 3 probably represented cases of normal pressure hydrocephalus. It is concluded that the ultrastructure of the cerebral cortex is of at least nosological interest in the study of N.P.H.
mesh_terms: D002540:Cerebral Cortex / Q000648:ultrastructure*; D005110:Extracellular Space / Q000648:ultrastructure; D006801:Humans; D006849:Hydrocephalus / Q000473:pathology*; D006850:Hydrocephalus, Normal Pressure / Q000473:pathology*
vernacular_title: Le cortex cérébral des malades atteints d'hydrocéphalie à pression normale: etude ultrastructurale