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Cushing T, Barnard S, Fleis R, Peters R. Pseudoangiomatous Squamous Cell Carcinoma in the Oral Cavity of a Dog. J Vet Diagn Invest 2010; 22:299-302. [DOI: 10.1177/104063871002200225] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
An 8-year-old, spayed, female Labrador Retriever mixed-breed dog was presented to the Cornell University Hospital for Animals with an invasive oral mass involving the upper left fourth premolar and first molar teeth. Initial biopsy results suggested a poorly differentiated squamous cell carcinoma, whereas further histologic examination of the surgically removed mass revealed a hemangiosarcoma-like mass composed of numerous vascular clefts and variable numbers of keratinizing epithelial cells. Histologic and immunohistochemical characteristics were compatible with pseudoangiomatous squamous cell carcinoma, a well-recognized human variant of acanthomatous squamous cell carcinoma. Because of histomorphologic similarities with canine gingival hemangiosarcoma, diagnosticians should be aware of the present tumor variant as a differential diagnosis for vascular-like growths in the oral cavity of dogs.
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Affiliation(s)
- Tim Cushing
- Departments of Biomedical Sciences
- Departments of Cornell University College of Veterinary Medicine, Ithaca, NY
| | - Sandra Barnard
- Departments of Clinical Sciences
- Departments of Cornell University College of Veterinary Medicine, Ithaca, NY
| | - Rebekah Fleis
- Departments of Biomedical Sciences
- Departments of Cornell University College of Veterinary Medicine, Ithaca, NY
| | - Rachel Peters
- Departments of Biomedical Sciences
- Departments of Cornell University College of Veterinary Medicine, Ithaca, NY
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