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 Indian J Med Microbiol  
 

Figure 1: Assessment of the frontal sinus as seen on lateral cephalogram. (S -Sella, N -Nasion, SH -Highest point on the frontal sinus, SL -Lowest point on the frontal sinus, A -Maximum height of the sinus, B -Maximum sinus width perpendicular to the SH-SL line)

Figure 1: Assessment of the frontal sinus as seen on lateral cephalogram. (S -Sella, N -Nasion, SH -Highest point on the frontal sinus, SL -Lowest point on the frontal sinus, A -Maximum height of the sinus, B -Maximum sinus width perpendicular to the SH-SL line)