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Canine hepatic carcinoids

A K Patnaik, P H Lieberman, A I Hurvitz

    Veterinary Pathology
    |July 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Canine hepatic carcinoids are rare liver tumors in dogs. This study found that these neoplasms often present with diffuse liver involvement, hemorrhage, and necrosis, with a high rate of metastasis.

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    Area of Science:

    • Veterinary Pathology
    • Oncology
    • Comparative Pathology

    Background:

    • Primary hepatic neoplasms in dogs are uncommon.
    • Carcinoid tumors, a type of neuroendocrine tumor, are rarely reported in canine liver.

    Purpose of the Study:

    • To describe the clinicopathologic features of primary hepatic carcinoids in dogs.
    • To characterize the histologic patterns and metastatic potential of these canine liver tumors.

    Main Methods:

    • Histologic examination of 15 canine hepatic carcinoid cases.
    • Staining with modified Grimelius stain for argyrophilia.
    • Evaluation of tumor patterns, cellular morphology, and metastatic sites.

    Main Results:

    • 15 canine hepatic carcinoids were diagnosed from 110 primary hepatic neoplasms.

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  • All cases showed diffuse liver involvement with hemorrhage and necrosis.
  • Three distinct histologic patterns were observed: solid nests, cords/ribbons, and alveolar with rosettes.
  • Neoplastic cells were uniform with eosinophilic cytoplasm and vesiculated nuclei.
  • Argyrophilia was confirmed in all cases.
  • Metastasis occurred in 93.3% of cases, commonly to the peritoneal wall and lymph nodes.

    • Conclusions:

    • Canine hepatic carcinoids are aggressive tumors with a high metastatic rate.
    • Understanding their distinct histologic patterns is crucial for diagnosis.
    • Further research into the pathogenesis and treatment of these rare canine tumors is warranted.