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  Indian J Med Microbiol
 

Figure 1: Perineural spread along maxillary (V2) nerve: 49-year-old male, known case of carcinoma soft palate, received radiotherapy 1 year back, now presenting with pain in the left side of face. Linear fluoro-deoxy-glucose uptake noted in the region of the left pterygomaxillary fissure on coronal fluoro-deoxy-glucose positron emission tomography (a) and coronal fused fluoro-deoxy-glucose positron emission tomography/computed tomography (b) images. Transaxial fused positron emission tomography/computed tomography images (c and d) fluoro-deoxy-glucose uptake extending into the widened left pterygopalatine fossa (long white arrow) and then into the left foramen rotundum (short bold white arrow). The asymmetric uptake in the left foramen rotundum (black arrow) is noted on transaxial positron emission tomography images (e). Widened left foramen rotundum (white arrowhead) is noted on transaxial computed tomography images (f)

Figure 1: Perineural spread along maxillary (V2) nerve: 49-year-old male, known case of carcinoma soft palate, received radiotherapy 1 year back, now presenting with pain in the left side of face. Linear fluoro-deoxy-glucose uptake noted in the region of the left pterygomaxillary fissure on coronal fluoro-deoxy-glucose positron emission tomography (a) and coronal fused fluoro-deoxy-glucose positron emission tomography/computed tomography (b) images. Transaxial fused positron emission tomography/computed tomography images (c and d) fluoro-deoxy-glucose uptake extending into the widened left pterygopalatine fossa (long white arrow) and then into the left foramen rotundum (short bold white arrow). The asymmetric uptake in the left foramen rotundum (black arrow) is noted on transaxial positron emission tomography images (e). Widened left foramen rotundum (white arrowhead) is noted on transaxial computed tomography images (f)