Ica

Petrous Apex

Figure 10.4 The infralabyrinthine apical type of petrous bone cholesteatoma originates from the infralabyrinthine or apical compartments. When it originates from the former, it extends into the petrous apex. In some cases it may grow towards the sphenoid sinus or the horizontal portion of the internal carotid artery.

Figure 10.4 The infralabyrinthine apical type of petrous bone cholesteatoma originates from the infralabyrinthine or apical compartments. When it originates from the former, it extends into the petrous apex. In some cases it may grow towards the sphenoid sinus or the horizontal portion of the internal carotid artery.

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