An Occipital Artery Aneurysm Associated with a Transverse-sigmoid Sinus Dural Arteriovenous Fistula

Purpose: We report a patient with an occipital artery aneurysm below the scalp associated with a transverse-sigmoid sinus dural arteriovenous fistula (dAVF). Case: An 84-year-old male noticed a painless pulsatile mass measuring 2 cm in the left occipital region. Computed tomography (CT) 6 years befo...

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Bibliographic Details
Published in:Journal of Neuroendovascular Therapy 2017-01, Vol.11 (1), p.24-28
Main Authors: Kenichiro Ono, Hidenori Okawa, Hirohiko Arimoto, Hidenori Oishi
Format: Article
Language:Japanese
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Summary:Purpose: We report a patient with an occipital artery aneurysm below the scalp associated with a transverse-sigmoid sinus dural arteriovenous fistula (dAVF). Case: An 84-year-old male noticed a painless pulsatile mass measuring 2 cm in the left occipital region. Computed tomography (CT) 6 years before did not confirm any subcutaneous mass. An inquiry was conducted, but there was no history of occipital trauma. Cerebral angiography revealed a left transverse-sigmoid sinus dAVF. The dilated left occipital artery was a major feeding blood vessel, and aneurysm formation was partially observed. There was no marked change in the aneurysmal shape 6 months after diagnosis. Conclusion: Vascular wall stress related to an increase in blood flow and the fragility of the perivascular supporting tissue may have been involved in the pathogenesis.
ISSN:1882-4072