Classification of spinal vascular malformations and the number of patients included in our study4,13
| Type | Description | No. |
|---|---|---|
| I | SDAVF: | 33 |
| Ia) Single fistula | ||
| Ib) Polyfistulous | ||
| II | SCAVM | 3 |
| III | Juvenile/metameric malformations | 0 |
| IV | PMAVF13: | 10 |
| A) Single fistula | ||
| B) Often multiple, intermediate flow | ||
| C) Polyfistulous, large lesions |