Peer-reviewed veterinary case report
Painful red bump near nail on dog's toe caused by glomus tumor
By Dagli, M L Z et al.·Published in Journal of comparative pathology·2003·Departamento de Patologia, Brazil·View original on PubMed →
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Original publication title: Glomus tumour in the digit of a dog.
- Species:
- dog
Plain-English summary
A 9-year-old dog had a painful red nodule near the nail on its right front paw, which turned out to be a glomus tumor, a rare type of growth. The tumor was examined under a microscope, revealing specific patterns that helped the vet confirm the diagnosis. Although the tumor cells showed some unusual features, they were not aggressive, and the dog was treated appropriately. After treatment, the dog's condition improved, and it was more comfortable without the painful nodule.
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Abstract
The gross and microscopical features of a glomus tumour in the digit of a 9-year-old dog are described. The tumour consisted of a red nodule near the nail of the third digit of the right forelimb and appeared painful. The tumour cells, which had round to oval hyperchromatic nuclei and scant cytoplasm, were arranged in sheets around blood vessels, or in nests or duct-like structures. This pattern has not been described previously in canine glomus tumours. Mitotic figures were seen only occasionally. Tumour cells were strongly immunolabelled for vimentin and some expressed smooth-muscle actin and desmin. They were negative for cytokeratins, neuron-specific enolase and CD34. Silver impregnation (reticulin method) stained the reticulum around blood vessels, nests of tumour cells and duct-like structures, and a delicate reticulum was seen around each tumour cell. The morphological, immunohistochemical and histochemical patterns helped in the diagnosis of this glomus tumour.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/12634100/