Hiroki Karita, Koji Hirata, Kyoji Tsuda, Keishi Fujita, Alexander Zaboronok, Yuji Matsumaru, Eiichi Ishikawa
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Rapidly progressive dementia due to superior sagittal sinus dural arteriovenous fistula: A case report
Background
Dural arteriovenous fistula (dAVF) presenting primarily with memory disturbance is relatively rare and may be diagnosed late. However, symptoms often improve with appropriate treatment, as in our case.
Case Presentation
A 74-year-old man presented with cognitive decline and, within 2 months, developed gait disturbance, dysarthria, and ataxia, leading to hospitalization for suspected dAVF on magnetic resonance imaging. Angiography revealed a superior sagittal sinus dAVF. The patient underwent surgical disconnection of the dAVF from the superior sagittal sinus, and his cognitive function, paresis, and dysarthria improved, allowing for discharge with a modified Rankin Scale score of 2.
Conclusion
In cases with memory disturbance, dAVF should be considered a differential diagnosis, verified, and treated accordingly.
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