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Malignant fibrous histiocytoma (giant cell type) associated with a malignant mixed tumor in the salivary gland of a dog

AuthorsPérez, C.; García, R. A.; Reyes, L. E.; Pérez Pérez, Valentín ; González, N.; García, M. J.
KeywordsMalignant fibrous histiocytoma (giant cell type)
Mixed tumor
Salivary grand
Issue Date2000
PublisherSage Publications
CitationVeterinary Pathology 37: 350-353 (2000)
AbstractA 12-year-old male Boxer dog presented with a 5 X 5 X 7-cm partially encapsulated mass in the right mandibular salivary gland. Histologically, the mass was composed of neoplastic epithelial and mesenchymal cells. The mesenchymal component consisted of two cell populations arranged in different patterns: coalescing nodules of neoplastic mononuclear cells with rare osteoid and numerous osteoclastlike giant cells; and sheets of neoplastic spindle cells intermingled with neoplastic epithelial cells and containing osteoid and well-formed bone trabeculae lined by osteoblasts and few osteoclastlike giant cells. On the basis of these histological features, two malignant salivary tumors were diagnosed: a malignant fibrous histiocytoma (giant cell type! and a malignant mixed tumor. Immunohistochemical studies demonstrated keratin 5 and 8 expression by the neoplastic epithelial cells, indicating a probable salivary ductal origin, and vimentin expression by all mesenchymal elements, suggesting a fibroblastic line of differentiation.
Description4 páginas, 3 figuras.
Publisher version (URL)http://dx.doi.org/10.1354/vp.37-4-350
Appears in Collections:(IGM) Artículos
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