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endolymphatic sac


Definition: the dilated blind extremity of the endolymphatic duct, which lies external to the dura on the posterior aspect of the petrous part of the temporal bone.

Synonym(s): saccus endolymphaticusTA, Böttcher space, Cotunnius space, sacculus endolymphaticus

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.