The prostate gland.
D000818:Animals; D004283:Dog Diseases / Q000000981:diagnostic imaging*; D004285:Dogs; D008297:Male; D011469:Prostatic Diseases / Q000662:veterinary*; D011470:Prostatic Hyperplasia / Q000000981:diagnostic imaging / Q000662:veterinary; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging / Q000662:veterinary; D011859:Radiography