Horner syndrome due to internal carotid artery dissection

(A) Horner syndrome (miosis and ptosis).
(B) Multiple left frontoparietal acute ischemic lesions on diffusion-weighted MRI.
(C) Carotid angiography with evidence of left extracranial internal carotid artery occlusion.
(D) Internal carotid artery mural hematoma due to dissection evident on MRI scan.
(E) Intimal flap (arrows) appearance on Duplex scan, a pathognomonic sign of dissection.