The petrous apex: A guide for the general radiologist

Detailed imaging of the skull base can be a daunting prospect for non-specialist head and neck radiographers and radiologists. Fortunately, the petrous apex (the most anteromedial part of the temporal bone) is easily identified on CT and MRI. Despite the fact that petrous apical pathology may give rise to a range of clinical signs and symptoms (secondary to mass effect on local neurovascular structures), the list of disorders is relatively small. These diseases and petrous apex anatomy will be described below.

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