Abstract
The endolymphatic sac (ELS) can be found in a thickened portion of the posterior fossa dura medial to the sigmoid sinus and inferior to the posterior canal. A classic landmark that consistently defines the upper boundary of the ELS is known as “Donaldson’s line”. This line is drawn through the lateral semicircular canal (SCC), which bisects the posterior SCC; the ELS is usually at and below this line.
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© 2015 Springer-Verlag Wien
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Arnoldner, C., Lin, V.Y.W., Chen, J.M. (2015). Endolymphatic Sac Dissection (Retro-/Infralabyrinthine). In: Manual of Otologic Surgery. Springer, Vienna. https://doi.org/10.1007/978-3-7091-1490-2_10
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DOI: https://doi.org/10.1007/978-3-7091-1490-2_10
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Publisher Name: Springer, Vienna
Print ISBN: 978-3-7091-1489-6
Online ISBN: 978-3-7091-1490-2
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