Clinical History:
Young male with sudden onset of severe occipital headache.
Figure 1 MRI (T1WI)
Figure 2 MRI (T2WI)
Figure 3 (MRA)
What is your diagnosis?
Figure 1 Figure 2
Figure 3
Diagnosis:
Vertebral artery dissection with lateral medullary syndrome
Discussion:
Figure 1 T1WI shows a hypointense focus in the left lateral medulla. A high signal crescent rim is noted in the wall of the left vertebral artery.
Figure 2 The medullary lesion shows high signal intensity on T2WI.
Figure 3 MRA demonstrates luminal narrowing in the left vertebral artery.