title: [Scanning electron microscopy study of the synovial membrane in rheumatoid arthritis].
abstract: A comparative study under the scanning electron microscope of rheumatoid synovial membranes, 5 arthrosic synovial membranes, one tuberculous membrane, and 3 normal synovial membranes showed the pathological changes in the synovial membrane due to rheumatoid arthritis: Inflammatory aspect of the synovial fringes, surrounded by turgid and proliferative villous processes. Granular appearance of the endo-articular surface like a "pebble beach". Dome-shaped synoviocyte layer, standing out well above the subjacent intimal layer, associated with small round cells, also with a raised margin, covering most of the endo-articular surface. Plasma membrane of the superficial synovial cells, covered with numerous and various differentiations and abundant microvillous processes. Reticular deposits or layers, covering the apical poles of the synoviocytes.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000473:pathology*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D013583:Synovial Membrane / Q000648:ultrastructure*
vernacular_title: Etude en microscopie électronique à balayage de la membrane synoviale de la polyarthrite rhumatoïde.