This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pathology
all the following about xanthogranulomatous pyelonephritis are true except 
Select and explain. 
A. On cut section yellowish nodules are seen, B. Associated with tuberculosis, C. Foam cells are seen, D. Giant cells are seen
B: Associated with tuberculosis
Answer: B: Associated with tuberculosis 
Explanation: As discussed in text ,xanthogranulomatous pyelonephritis is associated with E.coli Proteus metabolism, pseudomonas, streptococcal faecalis, and klebshiella Refer robbins 8/943