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Free Content Endoscopic Endonasal Surgery of Orbital Tumors: What the Surgeon Wants to Know

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Endoscopic endonasal surgery of the orbit is a novel, minimally invasive surgical technique that allows for biopsy, decompression, or resection of masses in the medial orbit and orbital apex. This review discusses the surgical procedure, preprocedure imaging technique, important surgical decision points and their implications for the radiologist, and the pearls and pitfalls encountered at our institution. A review of important medial intraorbital anatomy and relevant sinus anatomy will help the radiologist provide valuable information to the surgical team. In particular, understanding the course of the ophthalmic artery, the relationship of the lesion with the optic nerve, and the annulus of Zinn are important considerations.

Learning Objective: Review the endoscopic endonasal orbital surgical procedure and list the relevant anatomic landmarks that will affect surgical planning for biopsy or resection of medial orbital tumors.
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Keywords: IMT = inferomedial muscular trunk

Document Type: Research Article

Publication date: October 1, 2018

More about this publication?
  • Neurographics is the peer-reviewed, bimonthly educational journal of the American Society of Neuroradiology. The journal comprises articles selected from material presented at the ASNR Annual Meeting. Neurographics also publishes other high-quality submissions that are primarily educational and have a high emphasis on a pictorial approach. Neurographics offers CME credit for reading review articles and completing quiz-based self-assessment activities. CME credit for review articles may be claimed up to 3 years after an article's publication date. Visit to view all available CME courses.
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