RT Journal Article SR Electronic T1 Imaging of Carotid Canal Sympathetic Plexus Schwannoma JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1212 OP 1215 DO 10.3174/ajnr.A2471 VO 32 IS 7 A1 J.D. Hamilton A1 F. DeMonte A1 L.E. Ginsberg YR 2011 UL http://www.ajnr.org/content/32/7/1212.abstract AB SUMMARY: One case report of a schwannoma involving the sympathetic plexus in the carotid canal has been reported previously. This article presents 2 additional cases of this rare entity with associated clinical and unique radiographic findings. All patients presented with diplopia among other symptoms, and they had enhancing masses that smoothly expanded the carotid canal on cross-sectional imaging. Comparison with the index case and differential diagnosis of more common pathologies in this area are discussed. ICAinternal carotid artery