Landmarks for endoscopic approach to the parapharyngeal internal carotid artery: A radiographic and cadaveric study. (10th June 2014)

• Record Type: Journal Article
• Authors: Ho, Brian; Jang, David W.; Van Rompaey, Jason; Figueroa, Ramon; Brown, Jimmy J.; Carrau, Ricardo L.; Solares, C. Arturo
• Is Part Of: Laryngoscope. Volume 124:Number 9(2014:Sep.)
• Page Start: 1995
• Page End: 2001
• Publication Date: 2014-06-10
• Subjects: Otolaryngology -- Periodicals; 617.51005
• DOI: 10.1002/lary.24601
• Languages: English
• ISSNs: 0023-852X

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="lary24601-sec-0001" sec-type="section"> <title>Objectives/Hypothesis</title> <p>To define transnasal endoscopic surgical landmarks for the parapharyngeal segment of the internal carotid artery (ppICA) using radiographic analysis and cadaveric dissection.</p> </sec> <sec id="lary24601-sec-0002" sec-type="section"> <title>Study Design</title> <p>Cadaveric and radiographic study.</p> </sec> <sec id="lary24601-sec-0003" sec-type="section"> <title>Methods</title> <p>One hundred seventy‐nine computed tomography angiography studies of the head and neck were analyzed using Osirix third‐party software (Pixmeo, Geneva, Switzerland). Dissection of a cadaveric specimen was used as a correlate to radiographic findings. The posterior aspect of the lateral pterygoid process and posterior border of the mandibular ramus were used as bony landmarks for the ppICA.</p> </sec> <sec id="lary24601-sec-0004" sec-type="section"> <title>Results</title> <p>At the level of the nasal floor, the distance from the ppICA to the posterolateral pterygoid process and to the posterior mandibular ramus was 2.36 cm and 1.94 cm, respectively, in males, and 2.37 cm and 1.99 cm, respectively, in females. At the level of the skull base, the distance from the ppICA to the posterolateral pterygoid process and to the posterior mandible was 2.33 cm and 1.49 cm, respectively, in males, and 2.20 cm and 1.57 cm, respectively, in females. Cadaver dissection demonstrated the utility of identifying these landmarks.</p> </sec> <sec id="lary24601-sec-0005" sec-type="section"> <title>Conclusions</title> <p>The posterior border of the mandibular ramus and the posterolateral aspect of the pterygoid process may serve as consistent bony landmarks for identification of the ppICA.</p> </sec> <sec id="lary24601-sec-0006" sec-type="section"> <title>Level of Evidence</title> <p>NA <italic>Laryngoscope</italic>, 124:1995–2001, 2014</p> </sec> </abstract>