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  Indian J Med Microbiol
 

Figure 2: Magnetic resonance imaging showing irregular lesion epicenter at posterosuperior nasal cavity extending into right sphenoid sinus which appears hyperintense on fluid-attenuated inversion recovery (a) and T2 (b) and showing enhancement on postcontrast T1 (c) sequences. Photomicrograph (d) showing small round blue cell tumor in a fibrillary background with occasional mitosis (H and E, ×40). Features are suggestive of olfactory neuroblastoma Grade II

Figure 2: Magnetic resonance imaging showing irregular lesion epicenter at posterosuperior nasal cavity extending into right sphenoid sinus which appears hyperintense on fluid-attenuated inversion recovery (a) and T2 (b) and showing enhancement on postcontrast T1 (c) sequences. Photomicrograph (d) showing small round blue cell tumor in a fibrillary background with occasional mitosis (H and E, ×40). Features are suggestive of olfactory neuroblastoma Grade II