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AJNR - American Journal of Neuroradiology

Published ahead of print on June 12, 2008
doi: 10.3174/ajnr.A1135

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Giant Extracranial Aneurysms of Both Internal Carotid Arteries with Aberrant Jugular Veins in a Patient with Neurofibromatosis Type 1

Y.-K. Ku^a, H.-Wu Chen^a, H.-Wen Chen^c, C.-J. Fu^a, S.-C. Chin^a and Y.-C. Liu^a,b

^a Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou, Taiwan
^b Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taiwan
^c Department of Internal Medicine, Lo-Tung Poh-Ai Hospital, Yilan, Taiwan

View larger version (174K): [in this window] [in a new window]   Fig 1. A, Right common carotid artery–injected angiography reveals a right extracranial ICA giant aneurysm. B, Left common carotid artery–injected angiography reveals a left extracranial ICA giant aneurysm.

View larger version (63K): [in this window] [in a new window]   Fig 2. A, Contrast-enhanced axial CT scan reveals focal bony defects bilaterally at the jugular foramen and hypoglossal canal with exophytic meningoceles (arrows). B, Contrast-enhanced axial CT scan reveals a right lambdoid suture defect (arrow). The drainage pathway of the right sigmoid sinus is noted to run aberrantly through the lambdoid sutures because of a space-occupying meningocele at the right jugular foramen.

View larger version (85K): [in this window] [in a new window]   Fig 3. A, Lateral view of the right cervical ICA taken with prolonged-injection angiography reveals an aneurysm (short arrow) and right aberrant jugular venous drainage (long arrow) through the lambdoid suture defect at the posterior neck. B, Venous phase of right carotid artery–injected angiography reveals bilateral sigmoid sinuses (arrows) running aberrantly through the lambdoid suture defects with aberrant jugular venous drainage.