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Updated: May 13, 2026
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Creating Radio-cephalic Arteriovenous Fistula in the Forearm with a Modified No-Touch Technique
Published on: April 1, 2022
Type I spinal arteriovenous fistulae exception: a case for reclassification
K R Bulsara1, R Hebert, D Gimbel
1Yale Department of Neurosurgery, Neurovascular and Spine Sections, 333, Cedar Street, TMP 4, New Haven, 06520 CT, USA. Ketan.bulsara@yale.edu
Neuro-Chirurgie
|March 5, 2013
Summary
Type I spinal dural arteriovenous fistulae typically drain dorsally. This case presents an exception with ventral drainage, suggesting a new classification for these spinal vascular lesions.
Area of Science:
- Neurosurgery
- Vascular Neurology
- Spinal Cord Imaging
Background:
- Type I spinal dural arteriovenous fistulae are defined by dorsal venous drainage without spinal artery involvement.
- Traditional classification may not encompass all variations of spinal arteriovenous lesions.
Observation:
- A patient presented with Brown-Sequard syndrome due to a spinal arteriovenous fistula.
- Angiography revealed ventral venous drainage, an atypical feature for Type I lesions.
Findings:
- Endovascular embolization with onyx was partially successful.
- Microsurgical disconnection led to complete resolution of motor deficits and improved proprioception.
- The case highlights an exception to the typical drainage patterns of Type I spinal dural arteriovenous fistulae.
Implications:
- Proposes subdividing Type I lesions into dorsal and ventral categories based on drainage.
- This differentiation is critical for determining appropriate treatment strategies.
- Distinguishing ventral drainage is essential as it may necessitate different interventions compared to Type IV lesions.
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