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FIG 1. CT and MR imaging at presentation
A, Axial nonenhanced CT scan shows subtle bony lysis of the posterior wall of the left maxillary sinus (arrowhead). Note mucosal thickening of the left maxillary sinus.
B, Axial contrast-enhanced T1-weighted (550/15/3) MR image of the infratemporal fossa shows a poorly defined enhancing mass within the left PPF (arrow).
C, Coronal contrast-enhanced T1-weighted (550/15/3) MR image of the infratemporal fossa shows a soft-tissue mass of intermediate signal intensity (arrow), encasing the maxillary artery (arrowhead) and extending into the inferior orbital fissure.
D, Coronal contrast-enhanced T1-weighted (550/15/3) MR image, 8 mm posterior to C, shows enhancement of the left foramen rotundum (arrow).
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