PT - JOURNAL ARTICLE AU - Sagiuchi, T. AU - Tachibana, S. AU - Sato, K. AU - Shimizu, S. AU - Kobayashi, I. AU - Oka, H. AU - Fujii, K. AU - Kan, S. TI - Lhermitte Sign during Yawning Associated with Congenital Partial Aplasia of the Posterior Arch of the Atlas DP - 2006 Feb 01 TA - American Journal of Neuroradiology PG - 258--260 VI - 27 IP - 2 4099 - http://www.ajnr.org/content/27/2/258.short 4100 - http://www.ajnr.org/content/27/2/258.full SO - Am. J. Neuroradiol.2006 Feb 01; 27 AB - SUMMARY: We describe the case of a 26-year-old man who presented with symptoms compatible with Lhermitte sign that occurred during yawning. It was associated with congenital partial aplasia of the posterior arch of the atlas. Cervical multisection-detector CT myelography during yawning showed compression of the upper cervical cord due to the inward mobility of the isolated posterior tubercle. The symptoms completely disappeared following removal of the isolated posterior tubercle.