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  Indian J Med Microbiol
 

Figure 2: Perineural spread along maxillary (V2) nerve: 63-year-old male, treated case of Ca right buccal mucosa 5 years back, presenting with trismus and hypoesthesia of the right side of face. Sagittal fused positron emission tomography/computed tomography (a) Fluoro-deoxy-glucose uptake in the disease in the right retromolar trigone (white arrow). Sagittal positron emission tomography (b) linear fluoro-deoxy-glucose uptake extending from receptor-mediated transport into pterygopalatine fossa and inferior orbital fissure (black arrow). Transaxial fused positron emission tomography/computed tomography (c) shows increased asymmetric fluoro-deoxy-glucose uptake in the right pterygopalatine fossa (white arrowhead). Transaxial computed tomography (d) images show widened pterygopalatine fossa with loss of fat and enhancement within, compared to the normal pterygopalatine fossa on the left side (white arrow)

Figure 2: Perineural spread along maxillary (V2) nerve: 63-year-old male, treated case of Ca right buccal mucosa 5 years back, presenting with trismus and hypoesthesia of the right side of face. Sagittal fused positron emission tomography/computed tomography (a) Fluoro-deoxy-glucose uptake in the disease in the right retromolar trigone (white arrow). Sagittal positron emission tomography (b) linear fluoro-deoxy-glucose uptake extending from receptor-mediated transport into pterygopalatine fossa and inferior orbital fissure (black arrow). Transaxial fused positron emission tomography/computed tomography (c) shows increased asymmetric fluoro-deoxy-glucose uptake in the right pterygopalatine fossa (white arrowhead). Transaxial computed tomography (d) images show widened pterygopalatine fossa with loss of fat and enhancement within, compared to the normal pterygopalatine fossa on the left side (white arrow)