Figure 19: Contrast-enhanced CT of the midface of a 47-year-old patient after resection of a squamous cell carcinoma of the nasal cavity and new onset of epistaxis.
a) Axial plane; recurrent disease with posterolateral infiltration of the sphenoid sinus and extension into the carotid canal (arrow).
b) Sagittal plane demonstrating osseous infiltration of the clivus (arrow).
c) Coronal plane with extension of the tumor into the pterygopalatine fossa (arrow).