“…BPH is the most common prostatic disease diagnosed in the dog and affects approximately 80% of intact male dogs over 5 years old (Sirinarumitr et al, ) and more than 95% of intact male dogs over 9 years old (Gobello & Corrada, ). Large breeds such as Doberman, German Shepherd, Rhodesian Ridgeback and Labrador Retriever appear to be predisposed to BPH (Das, Patra, Das, Rath, & Mishra, ; Polisca, Troisi, Fontaine, Menchetti, & Fontbonne, ; Wolf et al, ). Several theories have been proposed to explain the aetiology, but only three facts have proven to be implied in both species: - The incidence of BPH increases with advanced age;
- The presence of functioning testes is required;
- Dihydrotestosterone (DHT), the active metabolite of testosterone, is more concentrated in hyperplastic prostatic tissue compared to normal tissue.
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