Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology · 1999
[Transformation of effusion and formation of granulation tissue in the pathologic process of otitis media with effusion].
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Zhang Q, Liang J
Аннотация
OBJECTIVE: To explore the transformation of stagnant effusion (SE) and the pathologic behavior leading to granulation tissue (GT) formation in the pathologic process of otitis media with effusion (OME).
METHOD: The temporoal bone slides from 306 ears with OME at the Otopathology Laboratory of the University of Minnesota USA were studied histopathologically under light microscopy.
RESULT: The observations revealed a pathologic process in which the type and the condition of stagnant effusion in the middle ear cleft was variable in the dynamics of OME progression from an early pathologic stage to an advanced pathologic stage. The granulation tissue was primarily formed by two types of fibroblast proliferation in subepithelial space. The absorption and the orgnization of SE and the formation of granulation tissue maybe occur simultaneously in same areas and a same pathologic process.
CONCLUSION: The granulation tissue can only form in the areas where effusion has stagnated and has been absorpted. It is very important that effusion of the otitis media should be removed completly before the formation of granulation tissue.
METHOD: The temporoal bone slides from 306 ears with OME at the Otopathology Laboratory of the University of Minnesota USA were studied histopathologically under light microscopy.
RESULT: The observations revealed a pathologic process in which the type and the condition of stagnant effusion in the middle ear cleft was variable in the dynamics of OME progression from an early pathologic stage to an advanced pathologic stage. The granulation tissue was primarily formed by two types of fibroblast proliferation in subepithelial space. The absorption and the orgnization of SE and the formation of granulation tissue maybe occur simultaneously in same areas and a same pathologic process.
CONCLUSION: The granulation tissue can only form in the areas where effusion has stagnated and has been absorpted. It is very important that effusion of the otitis media should be removed completly before the formation of granulation tissue.