PMC5259659_01
Coronal reformatted view from CT angiogram shows an intraluminal filling defect within the proximal left internal carotid artery consistent with thrombus (white arrow). There is also adjacent calcified atheromatous plaque (black asterisk). The internal carotid arteries are tortuous and deviate medially into the retropharyngeal space.
CRIM2017-4932567.001.jpg
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fig1
Occlusion of right vertebral artery at origin with collaterals from occipital artery and occluded posterior inferior cerebellar artery (PICA) were noted (Figures 1-3).
Axial image from CT angiogram demonstrates free floating thrombus within the internal carotid artery lumen "donut sign" (white arrow).
CRIM2017-4932567.002.jpg
PMC5259659_01_CRIM2017-4932567.002.jpg
fig2
Occlusion of right vertebral artery at origin with collaterals from occipital artery and occluded posterior inferior cerebellar artery (PICA) were noted (Figures 1-3).
Sagittal oblique reformatted view from CT angiogram again depicts the intraluminal thrombus within the left internal carotid artery (white arrow).
CRIM2017-4932567.003.jpg
PMC5259659_01_CRIM2017-4932567.003.jpg
fig3
Occlusion of right vertebral artery at origin with collaterals from occipital artery and occluded posterior inferior cerebellar artery (PICA) were noted (Figures 1-3).