Table 2.

Incidence of anomalies of the VA according to laterality of the VA

	Right	Left	Total
V1 segment
Normal	236	229	465
Anomalous	2	9	11
V2 segment
Normal	223	226	449
Anomalous	15	12	27
C5a	14	9	2
C4a	1	2	3
C3a	0	1	1

Data are presented as number

^aVA Entrance to the transverse foramen at each level. For example, C5 represents VAs not passing through C6 but C5 transverse foramen