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Case 1: Neonatal Cholestasis

Biopsy at 14 years of Age

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Microscopic Findings

  • Nonspecific reactive changes in hepatocytes
  • More advanced fibrosis with bridging

Ultrastructural Findings

The second biopsy also revealed a lack of peroxisomes in hepatocytes. In addition, this biopsy clearly showed abundant unequivocal trilamellar inclusions and lipid droplets together within large angulated lysosomes frequently present in the hepatocytes.
Trilamellar inclusions were also seen free in the cytoplasm.

References

  • Warren M, Mierau G, Wartchow E, Shimada H, Yano S. Histologic and ultrastructural features in early and advanced phases of Zellweger Spectrum disorder (infantile Refsum disease). Ultrastruct Pathol. 2018 May-Jun;42(3):220-227.
  • Braverman NE, D’Agostino MD, Maclean GE. Peroxisome biogenesis disorders: biological, clinical and pathophysiological perspectives. Dev Disabil Res Rev. 2013;17:187–196.
  • Braverman NE, Raymond GV, Rizzo WB, et al. Peroxisome biogenesis disorders in the Zellweger spectrum: an overview of current diagnosis, clinical manifestations, and treatment guidelines. Mol Genet Metab. 2016;117:313–321.

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