[Histological diagnosis of glomerulonephritis].

The morphological diagnosis of glomerulonephritis is a descriptive one. On the basis of the classification after Kettler and co-workers several forms are discussed in short and certain interrelations of these forms are indicated. Data concerning floridity are mostly expected, sometimes, however, they are possible only with reservation. Only with the help of the usual paraffin histology in a part of the biopsy cylinders no clear diagnoses can be made. Above all often the exclusion of minimal glomerular changes is not possible. Newer morphological investigation methods are an essential diag-microscopy; the question of the floridity of nostic enrichment, i.e. the semi-microsection technique, the immunohistology and the electron glomerulonephritis is best to be answered immunohistologically.