2004-09-07-22 Arnold Chiari malformation, type II © Manohar www.thefetus.net/
Arnold Chiari malformation, type II
S. Manohar, MD, DMRD
This is a case demonstrating Arnold Chiari malformation, type II. The 2-D images reveal:
1. Lemon sign with frontal scalloping.
mall posterior fossa.
2. Gross hydrocephalus and a s
3. Herniating posterior fossa contents into upper cervical canal.
4. A large open neural tube defect seen as diverging neural arches in the lumbar region. This is well documented in 2D and 3D imaging.