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

K.L. Reinshagen, H.D. Curtin, S.K. Freitag, and B.S. Bleier

View Article on Neurographics Website

Date of Activity Release: Oct. 1, 2018
Date of Activity Expiration: Oct. 1, 2021

Target Audience:
Intended for neuroradiologists and neuroradiology trainees with varying degrees of experience.

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.

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.

Commercial Support
No commercial support was received for this activity.

Credit Designation Statement

The American Society of Neuroradiology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

The American Society of Neuroradiology designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credit(s)TM. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Method of Physician Participation:
Each participant will review the corresponding Neurographics article located at Upon completion, each physician will complete and pass a post-test with a score of at least 80% to receive a CME certificate.

All individuals in control of content have disclosed the following relevant financial relationships. All of these relationships were treated as a conflict of interest, and have been resolved (C7 SCS 6.1-6.2, 6.5)

Authors have no relevant financial relationships.





Barton Branstetter 

Editor in Chief

None, N/A

Adam Flanders

Deputy Editor

Royalties, Lippincott Williams and Wilkins

Robert Quencer 

Consulting Editor

None, N/A

Mark Mullins

Associate Editor

Non-remunerative position, AUR6

Meng Law

Associate Editor

Stockholder, Clinical Imaging

Edward Escott

Associate Editor

Grant, Atherysys, Inc.; Royalties, Thieme Medical Publishers

Scott Faro

Associate Editor

None, N/A

Tina Young Poussaint

Associate Editor

None, N/A

Dheeraj Ghandi

Associate Editor

Grant, Arstasis, Axera Inc.; Consultant, Covidien, EV3

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