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Primary osteosarcoma arising from cirrhotic liver

Y Kitayama1, H Sugimura, T Arai

  • 1First Department of Pathology, Hamamatsu University School of Medicine, Japan.

Pathology International
|April 1, 1995
PubMed
Summary

This autopsy report details a rare case of primary osteosarcoma in a patient with liver cirrhosis and a history of hepatitis C virus infection. The findings confirm a true bone-cancerous tumor, distinct from liver cancer.

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Area of Science:

  • Oncology
  • Hepatology
  • Pathology

Background:

  • Primary osteosarcoma is exceedingly rare in the liver.
  • Hepatocellular carcinoma is a common complication of liver cirrhosis, often associated with hepatitis C virus infection.

Observation:

  • An autopsy revealed a large, 10 cm osteosarcoma in the right lobe of a cirrhotic liver.
  • The tumor exhibited central necrosis, hemorrhage, sarcomatous proliferation, and peripheral osteoid formation and calcification.
  • Minute hepatocellular carcinomas were found in non-tumorous liver tissue, separate from the osteosarcoma.

Findings:

  • Histological and immunohistochemical analysis confirmed the tumor as a primary osteosarcoma, with positive vimentin staining and negative epithelial markers.
  • The osteosarcoma was definitively distinguished from osteoid metaplasia of hepatocellular carcinoma.

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  • The patient's history included hepatitis C virus infection and a son with von Recklinghausen disease.

    • Implications:

    • This case expands the differential diagnosis of liver tumors, particularly in patients with cirrhosis.
    • It highlights the importance of thorough histopathological examination to differentiate primary hepatic osteosarcoma from other liver malignancies.
    • Understanding the distinct origins of these tumors is crucial for accurate diagnosis and potential therapeutic strategies.