Retrospective Evaluation of Canine and Feline Mammary Tumors Diagnosed during the period from 2009 to 2022 in Izmir Province

Authors : Oznur Yazıcıoğlu, Erdinç Güner, Gülçin Erdal, Münevver Ziynet Günen, Mehmet Karaboğa, Ahmet Arslan

Pages : 122-132

Doi:10.35864/evmd.1496848

View : 58 | Download : 79

Publication Date : 2025-01-03

Article Type : Research Paper

Abstract :The aim of this retrospective study was to determine the incidence of canine and feline mammary tumors diagnosed in the Pathology Laboratory of Bornova Veterinary Control Institute in Izmir Province between January 2009 and December 2022, as well as to analyse the relationships between the age and breed characteristics of affected animals and the presence of mammary tumors. For this purpose, the available information regarding each mammary tumor case was collected from archive records. Dogs and cats with mammary tumors were divided into four age groups. All hematoxylin and eosin-stained slides of mammary tumors were histopathologically re-evaluated and classified. The study material consisted of 106 (35.81%) mammary tumor cases, of which 83 (37.55%) belonged to dogs and 23 (30.66%) to cats. The highest incidence of mammary tumors in both species was observed in the age group of 8 to 11 years. A statistically significant relationship was found between the incidences of mammary tumors according to the age groups and breeds in both species (p<0.05). Terrier (28 cases) in dogs (p=0.000) and mixed breed (14 cases) in cats (p=0.0003) were the most commonly affected breeds by mammary tumors. In dogs, 64 (77.10%) of 83 mammary tumors were malignant and 19 (22.90%) were benign; in cats, 18 (78.26%) of 23 mammary tumors were malignant and 5 (21.74%) were benign. Malignant mammary tumors were detected more frequently in Terrier dogs (34.37%) and mixed breed cats (72.22%). The most commonly diagnosed malignant mammary tumors were mixed type carcinoma (51.56%) in dogs (p=0.000) and tubular carcinoma (50%) in cats (p=0.005). Benign mixed tumor (47.37%) and complex adenoma (26.32%) were the most frequently observed benign mammary tumors in dogs. Simple adenoma constituted the majority (60%, 3 cases) of benign mammary tumors in cats.
Keywords : kedi, köpek, meme tümörü, restrospektif çalışma, Türkiye