William Richard King MBBS, MRCP, Presenter: Nothing to Disclose

Beth Shepherd MBBS, MRCS, Abstract Co-Author: Nothing to Disclose

Jason Hector Michael MacDonald MBBS, Abstract Co-Author: Nothing to Disclose

Harriet Mary Joy, Abstract Co-Author: Nothing to Disclose

Anita Nagadi MBBS, Abstract Co-Author: Nothing to Disclose

Ravi Vijay Ayer MBBS, FRCR, Abstract Co-Author: Nothing to Disclose

Joseph Jacoby MBBS, FRCR, Abstract Co-Author: Nothing to Disclose

Sharmila Rao MBBS, Abstract Co-Author: Nothing to Disclose

-To review the clinical features of PRES. -To discuss the pathophysiology of this condition, which remains controversial. -To provide a review of the unique imaging appearances of PRES.

-A description of the clinical features of PRES and discussion of the most frequently associated conditions. -A pictorial demonstration of the typical imaging features of PRES with discussion of the appropriate imaging to obtain the diagnosis. -A review of less common sites of involvement and rarer imaging manifestations of PRES. -How imaging appearances may provide assessment of the degree of reversibility of the condition. -Discussion of the proposed pathophysiological mechanism producing PRES

The main teaching points: -To review the clinical features and demonstrate the imaging findings of this uncommon condition. -To ensure that it is included in the differential diagnosis of patients with vague neurological symptoms and that appropriate imaging is undertaken.

King, W, Shepherd, B, MacDonald, J, Joy, H, Nagadi, A, Ayer, R, Jacoby, J, Rao, S, Posterior Reversible Encephalopathy Syndrome (PRES): A Review of the Condition and Its Unique Imaging Features.  Radiological Society of North America 2010 Scientific Assembly and Annual Meeting, November 28 - December 3, 2010 ,Chicago IL. http://archive.rsna.org/2010/9006100.html