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
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Examples: glitazone, GI cocktail, etc.

