This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroradiology, Subject name: Radiology
Wrapping up of the cerebellum around the brain stem in Chiari Malformation is called 
Select and explain. 
A. Lemon sign, B. Banana sign, C. Lambda sign, D. Tectal Beak
B: Banana sign
Answer: B: Banana sign 
Explanation: Banana sign is due to the wrapping of cerebellum around the brain stem. Lemon sign is anterior bossing of frontal bone. Seen in Chiari II Malformation or spina bifida.