Medicine Arnold-Chiari malformation-All are true except- A Cerebellomedullary malformation B Almost always associated with severe spina bifida C There is obstruction to the flow of CSF D 4th ventricle lies above the level of formen magnum 💡 Explanation Arnold-Chiari malformation-All are true except- ✓ Correct Answer: D. 4th ventricle lies above the level of formen magnum