Peer-reviewed veterinary case report
Mast cell tumor rates and types in Croatian dogs 2002-2006
By Grabarević, Zeljko et al.·Published in Collegium antropologicum·2009·Department of General Pathology and Pathological Morphology·View original on PubMed →
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Original publication title: Mast cell tumor in dogs--incidence and histopathological characterization.
- Species:
- dog
Plain-English summary
A study found that mast cell tumors, a type of skin cancer, were diagnosed in 106 dogs, making up about 6.5% of all tumor cases examined in Croatia. Most affected dogs were male, with an average age of nearly 7 years, and the breeds most commonly diagnosed were Boxers and retrievers. These tumors were primarily located on the legs, and they were graded based on their severity, with about 15% being low-grade (Grade I) and 28% high-grade (Grade III). Understanding the characteristics of these tumors can help veterinarians better diagnose and treat affected dogs.
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Abstract
Incidence of mast cell tumors, their distribution according to sex, breed, age and localisation in Croatia is not established yet. Also, the statistical significance of the various histopathological parameters according to Patnaik's scheme, in the diagnostics of the tumor grade was not performed. Investigation analysed mast cell tumors histopathologicaly characterized at the Department of General Pathology and Pathological Morphology of the Veterinary Faculty Zagreb from January 1st 2002 to December 31st 2006. Sex, age, breed, localisation and tumor grade of each animal with tumor was recorded and statisticaly evaluated. Each histopathological variable was scored and compared with tumor grade. In the analyzed period, totally 1630 tumors were recorded, and mast cell tumors were found in 106 animals or in 6.5% of all cases. With statistically significant difference, this tumor was found in more cases in male dogs, and average age was 6.96 years. Boxers and retrievers were most frequent breeds, and localization was mostly on legs. Grade I tumor was found in 15.09%, grade II in 44.34% and grade III in 28.3% of animals. There were no significant correlations between tumor grade and age, breed, sex or localization. Considering the lesion scores compared with grade, statistically significant differences were found in cell shape, number of nucleoli, anisocytosis, anisokariosis, karyomegaly, mitoses, necroses, hemorrhages, cellularity, cell borders and collagenolysis.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/19408634/