This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Microbiology
[{'content': 'All cause brain lesions except \nSelect and explain. \nA. Giardiasis, B. Tuberculosis, C. Cysticercosis, D. Bacteroides', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) Giardiasis # G. lamblia is seen typically within the crypts in duodenum> It does not invade tissues, but remains tightly attached by means of the sucking disc to the epithelial surface in the duodenum and jejunum.> The diarrhoea in some cases may be steatorrhoeic with excess mucus and fat, but no blood.> Children may develop chronic diarrhoea, malabsorption, weight loss and a sprue-like syndrome.> Occasionally giardia may colonise the gallbladder, causing biliary colic and jaundice.', 'role': 'assistant'}]