Thyroid carcinosarcoma in a dog
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A two year-old female mongrel dog was presented with dysphagia and focal swelling at the thyroid region. Two masses were surgically removed from that site. The dog died a few days after surgery and it was not submitted to necropsy. The diagnosis of thyroid carcinosarcoma was based on malignant epithelial and mesenchymal cell components of the neoplasm and confirmed by immunohistochemistry for cytokeratin and vimentin, respectively. The thyroid origin was confirmed based on the positive immunostaining for thyroglobulin on the follicular epithelial cells and colloid. This is a neoplasm rarely diagnosed in dogs.
author list (cited authors)
Rodrigues, A., Masuda, E. K., Inkelmann, M. A., Ramos, A. T., Marques, B., Martins, T. B., & Kommers, G. D.