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E-074 Relationship between symptomatic presentation and aneurysmal wall enhancement in unruptured intracranial saccular aneurysms
  1. Y Fang1,
  2. W Brinjikji2,
  3. N Cancelliere2,
  4. J Byun3,
  5. I Radovanovic3,
  6. T Krings4,
  7. V Pereira4
  1. 1Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China, China
  2. 2Medical Imaging, University Health Network – University of Toronto, Toronto, ON, Canada
  3. 3Neurosurgery, University Health Network – University of Toronto, Toronto, ON, Canada
  4. 4Medical Imaging and Neurosurgery, University Health Network – University of Toronto, Toronto, ON, Canada


Objective To study the correlation between clinical symptoms and aneurysm wall enhancement (AWE) on high-resolution vessel wall imaging in a consecutive series of unruptured intracranial saccular aneurysms (IAs).

Methods We performed high-resolution vessel wall magnetic resonance imaging in a consecutive cohort of patients. Images were evaluated by two neuroradiologists for the presence of AWE. We studied the association between the symptomatic status of an aneurysm and AWE. Symptomatic aneurysms were defined as those associated with an atypical headache (sentinel) and cranial nerve palsy.

Results Sixteen patients with 20 aneurysms (9 symptomatic and 11 asymptomatic) were included. After the high-resolution magnetic resonance imaging was performed, AWE was detected in the total of 8 aneurysms. The proportion of AWE was comparable in symptomatic versus asymptomatic aneurysms (p=1.000). However, symptomatic aneurysms were more frequently located in larger arteries including internal carotid artery and basilar artery (p=0.014). Aneurysms with AWE were proved to have a larger size of aneurysm height (p=0.044), aneurysm neck (p=0.089), and maximal diameter (p=0.066).

Conclusions In unruptured intracranial saccular aneurysms, there is no correlation between clinical presentation of unruptured IAs and AWE on high-resolution vessel wall imaging. Larger aneurysms are presumably risk factor for AWE.

Disclosures Y. Fang: None. W. Brinjikji: None. N. Cancelliere: None. J. Byun: None. I. Radovanovic: None. T. Krings: None. V. Pereira: None.

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