[Leukoplakias of the larynx (i. clinical and histological classification) (author's transl)].

A clinical and histological classification of leukoplakias of the larynx is described. Basis for this classification is the prognostically important systematical, histologic and cytologic knowledge gained in gynecology. The early clinical diagnosis limited to a macroscopic description of leukoplakias is completed by a prognostic attribute won by cytology and/or histology. Thus the final diagnosis of precancerous lesions of the larynx is classified into leukoplakias with low-graded dysplasias, middle-graded dysplasia, highgraded dysplasia and atypical epithelium. The old nomenclature regards dysplasias as facultative precancerous lesions and the atypical epithelium as an obligatory precancerous lesion.