Lateral medullary (Wallenberg) syndrome

Case contributed by Dr Chris O'Donnell


Sudden onset of ataxia, vertigo and difficulty with swallowing. Previously very fit

Patient Data

Age: 65
Gender: Male

A small focus of restricte ddiffusion in the right postero-lateral medulla, with absent flow void in the adjacent right PICA. TOF MRA shows absent flow/occlusion in the distal right vertebral artery and right PICA. 

Case Discussion

​Findings in this syndrome are usually subtle on MRI (most useful is DWI).  Look for PICA or vertebral artery occlusion on the MRA and always consider spontaneous or traumatic vertebral artery dissection.

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Case information

rID: 16832
Published: 23rd Feb 2012
Last edited: 22nd Sep 2015
System: Head & Neck
Inclusion in quiz mode: Included

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