Zusammenfassung
Der folgende Beitrag stellt die im klinischen Kontext eingesetzten Grading- und Staging-Systeme bei nichtneoplastischen Lebererkrankungen (chronische und Autoimmunhepatitis, Fettleber- und Steatohepatitis, medikamentös-toxische Leberschädigung, Eisenspeicherkrankheit und Gallenwegserkrankungen) vor. Zusätzlich kann der fibrotische Parenchymumbau beurteilt werden sowie eine Transplantatleber im Hinblick auf eine mögliche Abstoßungsreaktion. Grundlage der histopathologischen Diagnostik ist die Leberbiopsie. Die konsequente und korrekte Anwendung der histologischen Scores ist in der diagnostischen Beurteilung nichtneoplastischer Lebererkrankungen verpflichtend.
Für die verschiedenen Erkrankungen stehen unterschiedliche Scores zur Verfügung. Es handelt sich um qualitative oder semiquantitative Scores, die auf Empirie beruhen und ihre praktische Relevanz nachhaltig bewiesen haben.
Das Grading beschreibt jeweils die entzündliche Aktivität, das Staging das Ausmaß der Fibrose bzw. der Architekturstörung bis hin zur Leberzirrhose. Das Staging ist in vielen Fällen das histopathologische Kriterium für die Prognoseabschätzung und somit ausschlaggebend für Therapieindikation und den Therapiebeginn.
Abstract
This article describes the grading and staging systems used in the clinical context for non-neoplastic liver diseases (chronic and autoimmune hepatitis, fatty liver and steatohepatitis, medicinal toxic liver damage, iron storage disease and gall duct diseases). Fibrotic parenchymal alterations can also be assessed as well as livers planned for transplantation, with respect to possible rejection reactions. The basis for the histopathological diagnostic procedure is the liver biopsy. The consistent and correct use of the histological scores is obligatory in the diagnostic assessment of non-neoplastic liver diseases. Different scores are available for the various liver diseases. These are qualitative and quantitative scores based on empiricism and the practical relevance has been effectively proven. Grading describes the inflammatory activity and staging the extent of fibrosis or structural disorders up to liver cirrhosis. In many instances staging is the histopathological criteria for the prognosis assessment and is, therefore, decisive for therapy indications and therapy initiation.
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Longerich, T., Flechtenmacher, C. & Schirmacher, P. Maß und Zahl in der Hepatopathologie. Pathologe 29, 15–26 (2008). https://doi.org/10.1007/s00292-007-0963-1
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DOI: https://doi.org/10.1007/s00292-007-0963-1