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CC BY-NC-ND 4.0 · Int Arch Otorhinolaryngol 2023; 27(03): e455-e460
DOI: 10.1055/s-0042-1749391
Original Research

Endoscopic Orientation of Juxta-pituitary Carotid in Transsphenoidal Approaches: Critical Considerations for Clinical Applications

Mostafa Ismail 
1   Department of Otorhinolaryngology, Minia University Hospital, Minia University, Minia, Egypt
,
Mohab Darwish
2   Department of Neurosurgery, Minia University Hospital, Minia University, Minia, Egypt
,
Abd El Rahman El Tahan
3   Department of Otorhinolaryngology, Aswan University Hospital, Aswan University, Aswan, Egypt
,
Islam R. Herzallah
4   Department of Otorhinolaryngology–Head & Neck Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
› Institutsangaben Funding The authors declare that they have no funding resources regarding the performance of the present study.
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Abstract

Introduction In sphenoid sinuses with ill-defined carotid bony landmarks, accidental injury of the internal carotid artery (ICA) remains one of the most challenging complications, which is particularly reported in the endoscopic endonasal transsphenoidal approaches (EETAs).

Objectives To describe an anatomical model for the endoscopic orientation of the juxta-pituitary segment of the ICA in relation to the lateral opticocarotid recess (OCR) as a nearby bony landmark.

Methods Dissection was performed progressively, simulating the EETA, in twenty fresh adult cadavers. After reducing the posterior and lateral walls of the sphenoid sinuses, various measurements were taken from both lateral OCRs to “contact points” on the juxta-pituitary segment of the ICA and lateral margins of the pituitary gland.

Results The current results have enabled us to divide the region between the lateral OCRs into 3 compartments: 2 lateral parasellar compartments contain juxta-pituitary segments of the ICA with a mean width of 8 mm and a narrow range from 7 mm to 10 mm; and a central intercarotid sellar compartment represents the safe region for bone drilling, showing widely variable widths ranging from 9 mm to 20mm. In all specimens, the variation in the width of the intercarotid compartment correlated with the distance between both lateral OCRs.

Conclusion The present study improves surgeon awareness of the variations in the course of the ICA through the EETA along sphenoid sinuses with ill-defined bony landmarks. An appreciation of the measurements taken in the present study can help in operative training, and can also provide a base for future studies to confirm ICA courses associated with a higher risk of injury.

Keywords

cadaveric study - internal carotid artery - lateral opticocarotid recess - pituitary gland - transsphenoidal approach


Publikationsverlauf

Eingereicht: 15. April 2020

Angenommen: 17. April 2022

Artikel online veröffentlicht:
04. August 2023

© 2023. Fundação Otorrinolaringologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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