title: What is your diagnosis? Large, fluid-dense circular mass in the left perineal area.
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000000981:diagnostic imaging*; D002415:Cats; D007674:Kidney Diseases / Q000000981:diagnostic imaging / Q000662:veterinary*; D008297:Male; D011859:Radiography; D013923:Thromboembolism / Q000000981:diagnostic imaging / Q000662:veterinary*