Peer-reviewed veterinary case report
Tumor with melanocytes found at tail base of 2-year-old Shih Tzu dog
By Saito, S et al.·Published in Veterinary pathology·2005·Department of Veterinary Pathology, Japan·View original on PubMed →
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Original publication title: Melanocytic matricoma in a dog.
- Species:
- dog
Plain-English summary
A 2-year-old male Shih Tzu was found to have a tumor at the base of his tail. The tumor was made up of specific types of skin cells and was diagnosed as a melanocytic matricoma, which is a rare type of skin tumor. This case may be the first of its kind reported in dogs. The dog was treated based on the findings, but the abstract does not specify the treatment or outcome.
People also search for: dog tail tumor · Shih Tzu skin tumor · canine melanocytic matricoma treatment
Abstract
We report a tumor that developed at the root of the tail in a male, 2-year-old Shih Tzu dog. Histologically, the tumor consisted of basaloid epithelial cells, with shadow cells and neoplastic melanocyte proliferation. Immunohistochemically, epithelial components were positive for keratin/cytokeratin but basaloid cells were negative. Mononuclear or multinuclear melanocytes were positive for vimentin, S-100 protein, and HMB-45. In conclusion, this dog was diagnosed with canine melanocytic matricoma on the basis of the similarity of the histologic and immunohistochemical features in humans, and it may be the first case in an animal.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/16006611/