"Lemon sign" & "Banana sign" on Antenatal USG is seen in
*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.
Down syndrome
Chiari Malformation
Turner syndrome
Klienfelters syndrome
Neuroradiology