[Classification of amyloidosis].

Amyloidosis is a collective term for a heterogeneous group of disorders characterized by deposition of a fibrillar, proteinaceous material, amyloid, in various tissues and organs. Increasing knowledge about the different proteins that constitute the amyloid fibrils has made it possible to classify amyloidosis by the fibril protein, which appears more rational than the traditional classification by its clinical symptoms. A group of experts on amyloidosis met in Oslo in 1990 and agreed upon a nomenclature and classification based on the chemical properties of the amyloid fibrils.