This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
[{'content': 'Michaelis-Gutmann bodiesare found in: \nSelect and explain. \nA. Malakoplakia, B. Xanthogranulomatous pyelonephritis, C. Nail patella syndrome, D. APKD', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Michaelis-Gutmann bodies (M-G bodies) M-G bodies are concentrically layered basophilic inclusions found in the urinary tract. They are 2 to 10 mm in diameter, and are thought to represent remnants of phagosomes mineralized by iron and calcium deposits. M-G bodies are a pathognomonic feature of malakoplakia, a distinctive chronic inflammatory reaction that affects the genitourinary tract.', 'role': 'assistant'}]