This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
All causes brain lesions except 
Select and explain. 
A. Giardiasis, B. Tuberculosis, C. Cysticercosis, D. Bacteriodes
A: Giardiasis
Answer: A: Giardiasis 
Explanation: giardiasis is caused by Giardia lamblia. the parasite attaches itself to the epithelial surface of duodenum and jejunum and causes disturbance of intestinal function leading to malabsorption of fat. Patient presented with loose stool and mild steatorrhoea. .Baveja textbook of parasitology 3rd edition.