Our purpose was to present 3 cases of perineural tumor spread (PNS) to the oculomotor (CN III) nerve. To our knowledge, PNS to CN III has not been previously reported. In the course of advanced PNS, typically with involvement of the cavernous sinus, tumor may spread in a retrograde fashion to involve CN III in the interpeduncular fossa and can even invade the brainstem.
From the Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX.
Received for publication February 14, 2013; accepted February 26, 2013.
Reprints: Vinodh A. Kumar, MD, Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1482, Houston, TX 77030 (e-mail: firstname.lastname@example.org).
Presented at the 43rd Annual Meeting of the American Society of Head and Neck Radiology, October 2009, New Orleans, LA.
The authors have no conflict of interest to report.