RADIOLOGY MCQ---Lemon sign and Banana sign

Lemon sign and Banana sign

Q1.Banana sign refers to 
a.flattening of cerebellar hemisphere
b.scalloping of frontal bones
c.flattening of cerebrum
d.none

Q2.Lemon sign and banana sign are found in 
a.open spina bifida
b.Arnold-Chiari malformation
c.both
d.none

ANS.1===a==Banana sign refers to flattening of cerebellar                                    hemisphere
         2===c==Lemon sign and banana sign are found in .open                                 spina bifida and Arnold-Chiari malformation


The banana sign refers to the shape of the cerebellum

 owing to caudal displacement; the lemon sign refers to the

 lemon-shaped head resulting from scalloping of the frontal

 bones.