Usefulness of Image Guidance in the Surgical Treatment of Petrous Apex Cholesterol Granuloma

<table>Intraoperative screenshot at the end of the drilling. The petrous apex lesion has been reached without damaging the surrounding structures (<i>blue</i>: jugular bulb; <i>yellow</i>: cochlea; <i>red</i>: internal   carotid artery; <i>green</i>: petrous apex lesion).</table>

Case Reports in Otolaryngology

fig6

Figure 6

Figure 6: Usefulness of Image Guidance in the Surgical Treatment of Petrous Apex Cholesterol Granuloma 