Peer-reviewed veterinary case report
Dog with heart muscle scarring and cartilage growth in right atrium
By Tanaka, Yusuke et al.·Published in Journal of comparative pathology·2021·Department of Veterinary Medicine, Japan·View original on PubMed →
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Original publication title: Myocardial Fibrosis with Cartilaginous Tissue Formation in Right Atrial Auricle of a Dog.
- Species:
- dog
Plain-English summary
A 13-year-old Miniature Dachshund was brought in with swelling in the face and neck. After a thorough examination and a CT scan, the vet found a mass on the heart wall. A closer look at the mass showed that it was made up of special cells that were replacing heart tissue but were not cancerous. The dog did not show signs of malignancy, and while the condition was serious, it was not life-threatening. Treatment options would depend on the dog's overall health and the vet's recommendations.
People also search for: dog heart mass treatment · Miniature Dachshund swelling face · dog myocardial fibrosis symptoms
Abstract
A 13-year-old castrated male Miniature Dachshund exhibited oedema of the face and cervical region. Clinical examination, including computed tomography, revealed a mass on the right atrial wall. Histopathological examination of the mass revealed proliferation of spindle cells, which formed intersecting bundles and abundant proteoglycan material. Multiple islands of hyaline cartilage were also observed within foci of proliferated spindle cells. Although the proliferated spindle cells replaced the myocardial parenchyma, there was no evidence of malignancy. The spindle cells were immunopositive for vimentin and α-smooth muscle actin, while chondrocytes were immunopositive for vimentin and S100. Neither the spindle cells nor the chondrocytes were immunolabelled for cytokeratin AE1/AE3, desmin, factor VIII, melan A, p63 or Ki-67. These findings indicate that the lesion represented myocardial fibrosis with cartilaginous tissue formation.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/34119230/