This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'Which one of the following statements is false with regard to Xanthogranulomatous pyelonephritis in children – \nSelect and explain. \nA. Often affects those younger than 8 years of age., B. It affects the kidney focally more frequently than diffusely, C. Boys are affected more frequently., D. Clinical presentation in chidren is same as in adults', 'role': 'user'}, {'content': "Answer: A \nExplanation: 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).\nXanthogranulomatous pyelonephritis in children \n\nAge of presentation ranges from infancy to 16 years.\nFocal form being more common in children --> Appear healthy.\nThose who affected diffusely, present with non-specific symptoms of chronic infection.\n\ni) Weight loss\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 ii) Fever\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 iii) Lethargy\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 iv) Failure to thrive\n\nProteus is the most common causative organism.\n\nI am not sure about option 'c'.\nIn old ages, xanthogranulomatous pyelonephritis is more common in female, but I cound not find data in children.", 'role': 'assistant'}]