Table 1:

Clinical data

Patients	Age (Years)/ Sex	Presenting Symptoms	Time Elapsed between Onset of Symptom and Imaging	Clinical Status before Imaging	McCormick Score	Level of the Nidus	MR Hyperintensity T2	Hemorrhage
1	57/F	Progressive paresthesia followed by motor weakness of lower extremities	18 months	Sensorimotor deficit of lower extremities	II	N.A. (peri-medullary fistula)	C5-C7	−
2	29/F	Paraparesis developed within 48 hours	4 months	Paraparesia and sphincterian deficit	IV	T5	T3-T6	+
3	23/M	Paresthesia of superior limbs	3 months	Paresthesia of superior limbs	I	C2-C3	−	−
4	19/M	Paresthesias of all extremities	3 years	Normal	I	C1	−	−
5	14/M	Transitory paraplegia	4 months	Dorsalgias	I	T8-T9	−	−
6	21/F	Acute tetraplegia	8 years	Paresis and paresthesias of right inferior limb	I	C6	C4-C5	−
7	18/M	Paraplegia developed within 24 hours	6 months	Paraplegia and sphincterian deficit	IV	T2	−	+
8	35/F	Acute hemiparesis	2 years	Hemiparesis	II	C2-C3	−	−
9	13/M	Acute hemiparesis	2 years	Hemiparesis	II	C5-C7	C3-T2	−

Note:—F indicates female; M, male. McCormick clinical functional score: grade I: neurologic examination normal or mild deficit without impairment of the function of any limb and normal walking; grade II: sensitivomotor deficit of limbs and/or severe pains and/or sensitive deficit responsible of an impairment of the quality of life but compatible with independent and self-sufficient walking; grade III: severe sensitivomotor deficit of inferior limbs, enabling not walking anymore, or disabling sensitivomotor deficit of the superior limbs with or without loss of self-sufficient walking; and grade IV: deficit of inferior and/or superior limbs responsible for a total dependence.