Kondo Kenji, Baba Shintaro, Suzuki Sayaka, Nishijima Hironobu, Kikuta Shu, Yamasoba Tatsuya
ORL J Otorhinolaryngol Relat Spec. 2018;80(1):28-35. doi: 10.1159/000486372. Epub 2018 Feb 20.
BACKGROUND/AIMS: This study aimed to examine variations in the location of the infraorbital nerve relative to postoperative maxillary cysts to assess the potential risk of nerve injury during endonasal marsupialization.
Coronal computed tomography images of 130 patients (162 sides) with postoperative maxillary cysts who visited our clinic between 2003 and 2014 were reviewed from the viewpoint of the anatomical relationship between the infraorbital nerves and cysts.
The proportions of the six locations were as follows: upside 45.1% (n = 73), separate 13.0% (n = 21), medial 5.6% (n = 9), lateral 14.2% (n = 23), in-between 7.4% (n = 12), and unevaluable 14.8% (n = 24). The proportion of the cases with a potential risk of infraorbital nerve damage during endoscopic marsupialization, including medial, in-between, and unevaluable locations, was 27.8%. Retrospective chart review revealed that 2 patients with a postoperative maxillary cyst that were unevaluable complained of persistent postoperative hypoesthesia of the cheek.
The anatomical relationship between the infraorbital nerve and postoperative maxillary cysts varied among patients, with approximately one-fourth of the patients being at risk of infraorbital nerve injury even during endoscopic procedures.
背景/目的：本研究旨在检查眶下神经相对于上颌术后囊肿的位置变化，以评估鼻内袋形缝合术期间神经损伤的潜在风险。
回顾了2003年至2014年间来我院就诊的130例（162侧）上颌术后囊肿患者的冠状位计算机断层扫描图像，从眶下神经与囊肿的解剖关系角度进行分析。
六个位置的比例如下：上方45.1%（n = 73），分离13.0%（n = 21），内侧5.6%（n = 9），外侧14.2%（n = 23），中间7.4%（n = 12），无法评估14.8%（n = 24）。在内镜袋形缝合术期间有眶下神经损伤潜在风险的病例比例，包括内侧、中间和无法评估的位置，为27.8%。回顾性病历审查显示，2例无法评估的上颌术后囊肿患者抱怨术后脸颊持续感觉减退。
眶下神经与上颌术后囊肿的解剖关系在患者之间存在差异，即使在内镜手术期间，约四分之一的患者有眶下神经损伤的风险。
