Axial (a) and coronal (b) contrast-enhanced MRI. JA with its epicenter into the root of the left pterygoid process. The nasopharyngeal component with submucosal spread is clearly evident (black asterisk). The lesion reaches the intracranial extradural compartment through the inferior and superior orbital fissures (white arrows), inferolaterally displacing the maxillary nerve (black arrowhead). The white asterisk indicates Meckel’s cave. LPM: lateral pterygoid muscle; MPM: medial pterygoid muscle.
