Peer-reviewed veterinary case report
Are multiple mammary tumors in dogs related biologically?
By Gunnes, G et al.·Published in Veterinary and comparative oncology·2017·Faculty of Veterinary Medicine and Biosciences·View original on PubMed →
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Original publication title: A statistical assessment of the biological relationship between simultaneous canine mammary tumours.
- Species:
- dog
Plain-English summary
A study looked at dogs with multiple mammary tumors, finding that 23% of the 216 dogs had simultaneous tumors. Most of these tumors were benign, but some were malignant. The research showed that when dogs had more than one tumor, they were often of the same type, suggesting a biological link between them. This information can help veterinarians better understand and treat dogs with multiple mammary tumors.
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Abstract
Simultaneous canine mammary tumours (CMTs) are frequently reported in the literature, but few studies have addressed their biological relationship in detail or performed statistical assessments. In this study, 269 canine mammary gland tumours from 216 dogs were categorized using an extended histopathological classification, where semiquantitative and binomial scales enumerated morphological parameters of the tumours. The classification facilitated a statistical study of the biological relationship between simultaneous within-dog tumours. Seventy-seven percent of the dogs had single tumours and 23% had simultaneous tumours. Sixty-one percent of the neoplasias were benign, with complex adenoma as the most frequent diagnosis and 39% were malignant, with complex carcinoma as the most common malignancy. Simultaneous tumours within dogs more often had equal diagnoses and neoplastic level (benign or malignant) than would be expected by chance alone, as compared with random pairs of single tumours from different dogs. This statistically supported finding indicated the presence of a biological relationship between simultaneous tumours.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/26452754/