TABLE 1:

Previously published cases of extracranial internal carotid artery (ICA) fenestration or duplication

TypeLevelCommentReference
1. DuplicationComplete ICAAberrant ICA typeKillien et al., 1980
2. FenestrationC2Angiographic signs of dissectionTanaka et al., 1982
3. FenestrationC1–C2Angiographic signs of dissectionHasegawa et al., 1985
4. FenestrationC1–C2Angiographic signs of dissectionHasegawa et al., 1985
5. FenestrationC1–C2Angiographic signs of dissectionNakamura et al., 1993
6. DuplicationComplete ICAAberrant ICA typeChess et al., 1995
7. DuplicationComplete ICAAberrant ICA typeKoenigsberg et al., 1995