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Hepatocholangioadenoma in a pig
1Obihiro Meat Inspection Office, Prefecture of Hokkaido' Nishi-25, Obihiro, Japan.
Journal of Comparative Pathology
|January 1, 1992
Summary
A novel liver tumor, termed hepatocholangioadenoma, was identified in a pig. This mixed neoplasm contains both hepatocellular and cholangiocellular components, expanding the known species affected by this tumor type.
Area of Science:
- Veterinary Pathology
- Comparative Oncology
- Swine Medicine
Background:
- Primary hepatic neoplasms can exhibit diverse histological patterns.
- Mixed hepatocellular and cholangiocellular tumors have been documented in various species.
- Understanding tumor origins and classifications is crucial for veterinary diagnostics.
Purpose of the Study:
- To describe a unique mixed hepatic neoplasm in a pig.
- To propose a suitable histopathological term for this specific tumor type.
- To contribute to the comparative understanding of liver tumors across species.
Main Methods:
- Histopathological examination of neoplastic nodules in a Landrace sow's liver.
- Identification and characterization of distinct neoplastic cell types within the nodules.
- Review of existing literature on primary hepatic neoplasms.
Main Results:
- Several neoplastic nodules were observed in the liver.
- Nodules comprised two closely associated neoplastic cell types: hepatocellular and cholangiocellular.
- The term "hepatocholangioadenoma" is proposed for this mixed tumor.
Conclusions:
- A mixed hepatocholangioadenoma has been identified in a pig.
- This finding represents a novel occurrence of this tumor type in swine.
- The classification "hepatocholangioadenoma" accurately reflects the dual cell lineage observed.