Erik Steckler MD, BS, Presenter: Nothing to Disclose

Ryan David Murtagh MD, MBA, Abstract Co-Author: Nothing to Disclose

Robert Andrew Zamore MD, Abstract Co-Author: Nothing to Disclose

1. The reader should understand criteria for cerebellar tonsillar herniation as well as appropriate landmarks and measurement techniques used to confirm presence of herniation. 2. Reader should understand differential diagnosis of cerebellar tonsillar herniation and be aware of relevant imaging findings that can be used to suggest etiology.  

Overview: I. Normal anatomy      a. How to identify normal from abnormal tonsillar position. III. Causes of tonsillar herniation      a.  Chiari (idiopathic)           1. Relevant imaging characteristics           2. Presenting symptoms           3. Treatment      b.  Idiopathic Intracranial Hypertension           1. Relevant imaging characteristics           2. Presenting symptoms, relevant history           3. Treatment      c.  Intracranial Hypotension           1. Relevant imaging characteristics           2. Presenting symptoms, relevant history           3. Treatment      d.  Intracranial mass/mass effect           1. Relevant imaging characteristics           2. Presenting symptoms           3. Treatment     

http://abstract.rsna.org/uploads/2014/14013672/14013672_xket.pdf

Steckler, E, Murtagh, R, Zamore, R, Cerebellar Tonsillar Herniation: More than the Chiari Malformation.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14013672.html