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Table 2: Summary of MR imaging features of spinal epidural hemangiomas—low signal rim, dural tail sign, and mass effect
Case No. MR Type Contour Low Signal Rim on T1WI Low Signal Rim on T2WI Low Signal Rim on CE Dural Tail Sign Cord Comp NF Widen Vertebral Body
1 A Smooth Yes Yes NA NA No No Intact
2 B Lobular No Yes No No No No Intact
3 A Lobular Yes Yes Yes No No No Intact
4 C Smooth Yes Yes No Yes No No Intact
5 C Lobular No No No No No Yes Intact
6 C Lobular No No No Yes Yes Yes Intact
7 C Lobular Yes Yes No Yes Yes Yes Erosion
8 D Ill-defined No No No Yes Yes Yes Intact
9 C Smooth Yes Yes Yes No Yes No Intact
10 D Ill-defined No No No No Yes No Intact
11 C Lobular No Yes Yes No Yes Yes Erosion
12 B Lobular No Yes No No No No Intact
13 B Smooth No No No No No No Intact
14 C Lobular Yes Yes No No Yes Yes Erosion
Note:—T1WI indicates T1-weighted MR image; T2WI, T2-weighted MR image; CE, contrast-enhanced MR image; Cord comp, cord compression; NF widen, neural foraminal widening; Vertebral body, involvement of vertebral body.