Revision as of 15:01, 3 February 2024

Characteristics of Chiari Malformations

Chiari Type	Features
0	Syrinx w/o tonsillar herniation
I (MC)	Tonsillar herniation >5 mm (basion-opisthion line) HCP & brain anomalies are uncommon Syrinx common
I.5	Tonsillar herniation w/o syrinx
II	vermis, brainstem & 4th vent. herniation assoc. w/ MMC & multiple brain anomalies syrinx & HCP very common
III	Cervical/occipital encephalocele
IV	Hypoplasia/aplasia of cerebellum & tentorium

@@ Line 8: / Line 8: @@
 * Syrinx w/o tonsillar herniation
 |-
-|I (MC)
+|I <span style="background-color:#fff2cc;">(MC)</span>
 |
 * Tonsillar herniation >5 mm ''(basion-opisthion line)''