Fig. 7
From: The pterygopalatine fossa: imaging anatomy, communications, and pathology revisited
a ACC of the hard palate in a 33-year-old female patient. Sagittal contrast-enhanced FS T1W MR image shows an enhancing mass involving the hard palate (asterisk) with PNS along the right greater palatine nerve (arrows). b Axial contrast-enhanced FS T1W MR image in the same patient obtained at the level of the inferior apex of the PFF shows the enlarged, enhancing right greater palatine nerve (thick arrow) and lesser palatine nerve (thin arrow) due to PNS. Note the normal left greater palatine nerve (thick arrow head) and lesser palatine nerve (thin arrow head). c Axial contrast-enhanced FS T1W MR image in the same patient at a higher level shows disease spread from the right PPF (thick arrow) into the right Vidian canal (thin arrow). d Axial contrast-enhanced FS T1W MR image in the same patient obtained at the level of the FR (thin arrow). It shows a thickened and abnormally enhancing right ION (thick arrow) due to PNS