[Subepithelial changes in simple leukoplakic hyperplasia of the laryngeal mucosa (author's transl)].

Subepithelial changes in hyperplasia of the laryngeal mucosa consist in edema and cellular inflammatory reaction. 150 cases of epithelial hyperplasia without atypia have been investigated histologically in regard to these subepithelial changes. The cases were subdivided into 3 categories, according to the degree of hyperplasia. The degree of inflammatory reaction in the subepithelial compartment also was classfied into 3 groups. A, B and C. There was evidence of a positive correlation between the increase in the epithelial hyperplasia and the increase of a positive correlation between the increase in the inflammatory process in the subepithelial layer. It could not be decided, which one of these two pathological changes was primary and which secondary. The therapy, however, should aim at both, epithelial proliferation, as well as, subepithelial inflammation.