Snake eyes (facial nerve)

Dr Henry Knipe et al.

Snake eyes is a term used to refer to the appearance of the facial nerve on coronal CT within its canal in the petrous temporal bone as the tympanic segment doubles back next to the labyrinthine segment adjacent to the cochlea. Anteriorly, these two segments converge at the geniculate ganglion.

Snake eyes refers to the appearance of dice when two "ones" or "pips" are rolled (see picture). 

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Article Information

rID: 25100
System: Head & Neck
Section: Gamuts
Tags: sign, refs
Synonyms or Alternate Spellings:

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Cases and Figures

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    Figure 1: "Snake Eyes"
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    Figure 2: "Snake Eyes" (annotated)
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    Figure 3: "Snake eyes" on dice
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    Loss of the "snak...
    Case 1: PTB fracture with loss of normal snake eyes
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