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Liu classification for localization of spinal SFTs [13].
| Type | Subtype |
|---|---|
| Type 1: extradural | IA, intracanal type |
| IB, intra- and extracanal type | |
| Type II: intradural | IIA, extramedullary type |
| IIB, intramedullary invasion type | |
| Type III: intra- to extradural and paravertebral type |
