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Related Experiment Videos

Thyroid carcinosarcoma in a dog.

B Grubor1, J S Haynes

  • 1Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA 50011-1250, USA. brankag@iastate.edu

Veterinary Pathology
|January 20, 2005
PubMed
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A rare canine carcinosarcoma originating from the thyroid gland was identified in a dog. This diagnosis, confirmed by specific cell markers, marks a significant advancement in understanding this extremely rare neoplasm.

Area of Science:

  • Veterinary Pathology
  • Oncology
  • Comparative Pathology

Background:

  • Carcinosarcoma is a rare malignant neoplasm characterized by the simultaneous presence of carcinomatous and sarcomatous elements.
  • Thyroid carcinosarcoma is an exceptionally rare subtype, with limited documented cases in veterinary literature.
  • Understanding the origin and behavior of rare canine tumors can provide insights into human oncological conditions.

Observation:

  • An adult mixed-breed dog presented with dysphagia and a palpable cervical mass.
  • Radiographs revealed a subcutaneous cervical mass and pulmonary metastatic nodules.
  • Surgical excision of the cervical mass was performed for diagnostic purposes.

Findings:

  • Histopathological examination diagnosed the cervical mass as carcinosarcoma.

Related Experiment Videos

  • Immunohistochemistry confirmed the diagnosis, with positive staining for cytokeratin and vimentin.
  • Specific immunohistochemistry for thyroglobulin identified the thyroid gland as the tissue of origin.

    • Implications:

    • This case represents the fifth documented instance of canine thyroid carcinosarcoma and the first confirmed using specific cell markers.
    • The confirmation of thyroid origin through immunohistochemistry provides definitive diagnostic criteria for this rare tumor.
    • This finding contributes to the comparative oncology field, highlighting similarities between rare canine and human neoplasms.