Peer-reviewed veterinary case report
Mammary gland tumors in male dogs and link to testicular tumors
By Tkaczyk-Wlizło, Angelika et al.·Published in Journal of applied genetics·2024·Institute of Biological Bases of Animal Production·View original on PubMed →
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Original publication title: Occurrence of mammary gland tumours in male dogs and its weak association with development of testicular tumours: a review.
- Species:
- dog
Plain-English summary
A review of cases found that male dogs can develop mammary gland tumors, although it's quite rare compared to females. In a study of 74 male dogs with these tumors, most were benign and often appeared in dogs aged 7 to 13 years, with the highest occurrence at around 11 years old. The most affected breeds included Crossbreeds, Cocker Spaniels, and German Shepherds. Interestingly, only a small percentage of these dogs also had testicular tumors, suggesting that there's no strong link between the two types of tumors.
People also search for: male dog mammary tumors · Cocker Spaniel tumors · testicular tumors in dogs · dog cancer types · mammary tumors in male dogs
Abstract
Mammary gland tumours (MGTs) are commonly occurring neoplasms in female dogs. However, rare cases of MGTs in male dogs have been reported for years. Due to the low incidence of MGTs in male dogs in comparison to female dogs, veterinary oncology is mainly focused on mammary neoplasms diagnosed in female dogs and extensive research is conducted in this scientific area. Therefore, there are no sufficient epidemiological data on male dogs and the aetiology of their tumour development is still poorly understood.The aim of this literature review was to present cases of MGTs in male dogs for better understanding the scale of the problem over the years. The analyses of 74 affected male dogs with 92 tumours showed that the majority of MGTs in male dogs were benign tumours (54.3%), especially in form of adenomas, often developed in posterior canine mammary glands (58.1%).The increased number of canine MGTs in male dogs aged 7 -13 years with an age peak at 11 years was noted. The age of affected animals was not related to breed. Mammary gland neoplasms were diagnosed predominately in Crossbreeds (20.2%) followed by Cocker Spaniels (18.9%) and German Shepherds (10.8%).The association between MGT development in male dogs and co-occurrence of testicular tumours (TTs) has been discussed for years. Thus, cases of development of both tumours were included in this study. As a result, only in 12.7% cases of MGTs also history of TTs was described. Therefore, no general association between these tumours should be assumed.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/38123735/