<prompt> Which one of the following statements is false about Xanthogranulomatous pyelonephritis in children?Often affects those younger than 8 years of ageIt affects the kidney focally more frequently than diffuselyClinical presentation in children is same as in adultsBoys are affected more frequently  <response>: It is most frequently affected in females compared to males. It is an unusual form of chronic pyelonephritis characterized by granulomatous abscess formation, severe kidney destruction, and a clinical picture that may resemble renal cell carcinoma and other inflammatory renal parenchymal diseases. Xanthogranulomatous pyelonephritis is a form of chronic pyelonephritis characterised by destruction of renal parenchyma and the presence of granulomas, abscesses and collection of lipid laden foamy macrophages foam cells REF: Harrison book of internal medicine 21ST EDITION 