Cochlear promontory

Last revised by Paul A. Kohanteb on 6 Sep 2023

The cochlear promontory is the name given to the bone that overlies the basal turn of the cochlea protruding into the middle ear cavity. 

Related pathology

  • tympanic paragangliomas typically arise in the region of the cochlear promontory abutting the Jacobson nerve, which is a branch of CN IX (glossopharyngeal nerve).

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Cases and figures

  • Case 1: glomus tympanicum
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