Acta Anatomica Sinica ›› 2020, Vol. 51 ›› Issue (5): 677-681.doi: 10.16098/j.issn.0529-1356.2020.05.007

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A transoral endoscopic approach to locate the parapharyngeal segment of the internal carotid artery

WANG Zhen-lin* ZHANG Qiu-hang* LIU Jun-qi QI Yan ZHANG Si-yuan HOU Si-yuan#br#   

  1. Department of Otorhinolaryngology Head and Neck Surgery, Skull Base Center, Xuanwu Hospital, Capital Medical University, Beijing 100053,China
  • Received:2020-04-06 Revised:2020-05-04 Online:2020-10-06 Published:2020-10-06
  • Contact: WANG Zhen-lin;ZHANG Qiu-hang E-mail:wzl1812@163.com

Abstract:

Objective To establish an anatomically-based method  for locating the parapharyngeal segment of the internal carotid artery (ICA) via transoral endoscopy.   Methods Applied anatomic study was performed in 4 fresh adult cadaver heads (8 sides) via transoral endoscopy to explore the infratemporal fossa/parapharyngeal space. The localization method  based on anatomic plane was subsequently used in 37 cases of tumor surgery in this area, with the operational accuracy evaluated.   Results Following dissection of the layers of pharyngeal constrictor, anterio fascia of the longus capitis and stylopharyngeal fascia, the junction of the latter two was identified as a potential landmark to locate the parapharyngeal ICA in surgery. Following practice on the patients, a success rate of 93.10% was achieved by using this method  for ICA localization.   Conclusion The parapharyngeal ICA localization method  based on anatomic plane is clinically reliabie.

Key words: Infratemporal fossa, Internal carotid artery, Transoral, Anatomy, Endoscopy, Human

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