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Multiple dural arteriovenous malformations. Report of two cases.
N Kuwayama1, A Takaku, M Nishijima
1Department of Neurosurgery, Toyama Medical and Pharmaceutical University, Japan.
Journal of Neurosurgery
|December 1, 1989
Summary
Multiple dural arteriovenous malformations (AVMs) can occur in different locations, sometimes appearing sequentially or simultaneously. These cases highlight the varied presentation and potential for spontaneous resolution or sinus occlusion in dural AVMs.
Area of Science:
- Neurology
- Radiology
- Vascular Surgery
Background:
- Dural arteriovenous malformations (dAVMs) are abnormal connections between dura mater arteries and venous sinuses.
- Multiple dAVMs are rare but present unique diagnostic and therapeutic challenges.
Observation:
- Case 1: A patient presented with a right cavernous sinus dAVM that resolved spontaneously. Four months later, a new dAVM appeared in the right lateral sinuses, causing sigmoid sinus occlusion.
- Case 2: Another patient exhibited multiple dAVMs involving the cavernous sinus and the left lateral sinus.
Findings:
- The study reports two distinct cases of multiple dural AVMs in different cranial locations.
- One case demonstrated a sequential development and spontaneous resolution of a dAVM, followed by a new AVM with sinus occlusion.
- Angiography confirmed multiple dAVMs in the second patient, affecting both cavernous and lateral sinuses.
Implications:
- These cases underscore the importance of considering multiple dAVMs in clinical practice.
- Understanding the potential mechanisms of sinus occlusion in dAVMs is crucial for patient management.
- Further research into the frequency and pathogenesis of multiple dAVMs is warranted.