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[Morphology of the liver in anthracosilicosis (author's transl)]
Abstract:
Histological sections of the liver taken at the autopsy of 26 patients with anthracosilicosis of different degrees of severity were investigated retrospectively. Single macrophages containing dust were found in the portal fields, as well as dust storing Kupfer cells proliferating centroacinarity. Granuloma of the walls of central and sublobular veins could be observed, containing infiltrates of lymphocytes and plasma cells, proliferating fibroblasts including histiocytes, and fibrosis and hyalinisation in later stages. It may be assumed, that dust pigments are being transported by blood and taken up by Kupler cells in the first line, to be transmitted directly to the central vein and to a lesser degree by way of lymph drainage into the portal mesenchyma in a later stage. These morphological changes of the liver apparently did not cause any clinical symptoms; they could be found in a high percentage of all patients, which did not have cirrhosis of the liver, and they could be found in all degrees of severity of anthracosilicosis. Thus liver biopsy will yield valuable diagnostic results in this granulomatous disease of the liver as well.
Insights
Anthracosilicosis, a lung disease, causes liver changes like granulomas and dust-storing cells. These liver alterations are common in patients and may be detectable via liver biopsy.
Area of Science:
- Pathology
- Occupational Medicine
- Toxicology
Context:
- Anthracosilicosis is a severe lung disease caused by coal dust inhalation.
- Liver involvement in anthracosilicosis is not well-understood.
- Autopsy findings provide insights into organ-specific pathology.
Purpose:
- To investigate the histological changes in the liver of patients with anthracosilicosis.
- To understand the pathway of dust pigment transport and deposition in the liver.
- To assess the diagnostic value of liver biopsy in this condition.
Summary:
- Retrospective analysis of liver histology from 26 anthracosilicosis patients revealed dust-laden macrophages in portal fields and proliferating Kupffer cells.
- Granulomas were observed around central and sublobular veins, featuring inflammatory cells, fibroblasts, and fibrosis.
- Dust transport likely occurs via blood to Kupffer cells, then to central veins and portal lymphatics, causing asymptomatic liver changes.
Impact:
- Demonstrates that anthracosilicosis induces distinct, asymptomatic liver granulomas.
- Suggests liver biopsy can be a valuable diagnostic tool for detecting these granulomatous liver changes.
- Highlights the systemic effects of occupational dust exposure beyond the lungs.