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Table 2: Angiomorphologic characteristics of spinal epidural arteriovenous fistulas
Patient No. Arterial Feeder^{^a} Origin of Intradural Radicular Drainage Vein^{^a} Extension of Epidural Pouch^{^b} Extension of Arterialized Perimedullary Veins^{^b} Location of Arterialized Perimedullary Veins^{^b} No. of DSAs until Diagnosis
1 L3 R L3 L L3–L4 T8–T12 D = V 2
2 L3 bilateral, L4 L L3 L L2–L4 T3–T12 D = V 2
3 L1 R L1 R L1 ND D < V 1
4 L3 bilateral L3 R L3 T9–L1 D > V 1
5 Left iliolumbar artery S1 S1 T7–T12 D > V 3
6 T10 L and T11 L L2 L T 10–L3 T6–L1 D = V 3
7 L1 L L2 L L1–L2 T3–T12 D = V 1
8 T12 L T12 L T12 L T11 D > V 3
9 L3 L L3 L L3 L T6–T12 D < V 1
10 L4 R L4 R L2–L4 T3–T10 D = V 1
11 L3 L S1 bilateral L3–S1 T10–L1 D > V 1
12 L3 R L3 R L3 R T9–T12 D < V 1
13 L1 R L1 R L1 R T10–L1 D > V 1
Note:—D indicates dorsal to spinal cord; V, ventral to spinal cord; L, left; R, right; ND, no data.
↵a DSA.
↵b MRA/DSA.