Fisahn Christian, Burgess Brittni, Iwanaga Joe, Alonso Fernando, Chapman Jens R, Oskouian Rod J, Tubbs R Shane
Swedish Medical Center, Swedish Neuroscience Institute, Seattle, Washington, United States; Seattle Science Foundation, Seattle, Washington, United States.
Seattle Science Foundation, Seattle, Washington, United States.
J Neurol Surg Rep. 2017 Jan;78(1):e40-e42. doi: 10.1055/s-0037-1600136.
Several arterial variants have been reported to occur around the posterior arch of the atlas. Understanding the various anomalies and diagnosing them preoperatively can dramatically reduce the risk of surgical insult during neurosurgical procedures. Herein we report a case of an arterial variant found just below the posterior arch of C1. During the routine dissection of the suboccipital region via a posterior approach, an unusual bulge was identified just inferior to the inferior capitis oblique muscle. With further dissection, the structure was identified as a tortuous internal carotid artery. Arterial variants around the posterior arch of C1 are surgically significant and can result in catastrophic injuries if unappreciated. Most of these variants will be related to the vertebral artery. To our knowledge, an arterial variant of the internal carotid artery in this location, as reported herein, has not been previously reported.
据报道，寰椎后弓周围存在几种动脉变异。了解各种异常情况并在术前进行诊断可显著降低神经外科手术期间手术损伤的风险。在此，我们报告一例在C1后弓下方发现的动脉变异病例。在通过后路常规解剖枕下区域时，在下斜肌下方发现一个异常隆起。进一步解剖后，该结构被确定为一条迂曲的颈内动脉。C1后弓周围的动脉变异具有手术意义，如果未被识别，可能导致灾难性损伤。这些变异大多数与椎动脉有关。据我们所知，本文报道的该部位颈内动脉的动脉变异此前尚未见报道。
