Peer-reviewed veterinary case report
Dog with a rare desmoplastic tricholemmoma tumor near the eye
By Kok, Mun Keong et al.·Published in The Journal of veterinary medical science·2017·Graduate School of Agricultural and Life Sciences, Japan·View original on PubMed →
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Original publication title: Desmoplastic tricholemmoma in a dog.
- Species:
- dog
Plain-English summary
A 10-year-old mixed breed dog had a small mass about the size of a marble below its left eye. The mass was surgically removed and examined under a microscope, revealing it was a type of tumor called desmoplastic tricholemmoma. This tumor is made up of specific types of cells and tissue that can be identified through special staining techniques. After the surgery, the dog was diagnosed and treated successfully, and there were no further complications reported.
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Abstract
A 10-year-old mixed breed dog was presented with a 0.8 cm diameter mass below the left eye region. The mass was surgically removed and processed for histopathological examination. Microscopically, tumor cells proliferated in small lobules, nests and cords, and the tumor parenchyma was separated by desmoplastic stroma. Majority of the tumor cells were periodic acid-Schiff (PAS)-positive, and the desmoplastic stroma was densely collagenous and mucinous. Immunohistochemical results showed that the tumor cells were diffusely positive for cytokeratin 15, cytokeratin 19 and CD 34, while cytokeratin 8 reactivity was limited to the tumor cells proliferating in cords. Few tumor cells were positive for nestin. Based on the histopathological findings, the tumor was diagnosed as desmoplastic tricholemmoma.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/28458277/