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Figure 18. 62-year-old woman with Wegener's granulomatosis. (a) An axial CT image of the skull base shows sinonasal and maxillary sinus disease (black arrows). This has extended into the parapharyngeal space (white arrow), where it has identical appearances to a parapharyngeal abscess. Note is made of a nasal airway. (b) A contiguous CT image inferiorly in the same patient showing the parapharyngeal disease, which actually extended into the soft tissues of the posterior left neck (arrow).
