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
"Lemon sign" & "Banana sign" on Antenatal USG is seen in 
Select and explain. 
A. Down syndrome, B. Chiari Malformation, C. Turner syndrome, D. Klienfelters syndrome
B: Chiari Malformation
Answer: B: Chiari Malformation 
Explanation: *The Anterior bossing of frontal bone is called as Lemon sign *Wrapping of cerebellum around brain stem is called as Banana sign *Lemon sign and Banana sign are features of Chiari -II Malformation and also seen with spina bifida.