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Table 1: 
Classification of spinal vascular malformations and the number of patients included in our study4,13
TypeDescriptionNo.
ISDAVF:33
    Ia) Single fistula
    Ib) Polyfistulous
IISCAVM3
IIIJuvenile/metameric malformations0
IVPMAVF13:10
    A) Single fistula
    B) Often multiple, intermediate flow
    C) Polyfistulous, large lesions