Banana sign on USG is seen in :: (A) Arnold Chiari malformation, (B) Holoprosencephaly, (C) Dandy walker malformation, (D) Anencephaly
Answer is A. Compression or flattening of the posterior cerebellar surface making a crescentic appearance (banana sign) is seen in open spina bifida and Arnols Chairi's malformation. Reference: Dutta's Textbook of Obstetrics 7th edition page no 647