case_images: PMC6881771_01
case_images: The right unirhinal PEA threshold was -1.
case_images: CRIOT2019-1069741.001.jpg
case_images: PMC6881771_01_CRIOT2019-1069741.001.jpg
case_images: fig1
case_images: After treatment, his birhinal and unirhinal PEA thresholds had remained at -1 (Figure 1).
case_images: MRI shows irregular hyperintensity over bilateral rectus gyri, with extensive tissue loss at the left frontal base. The sizes of the right olfactory bulb (red arrow) and tract were relatively small.
case_images: CRIOT2019-1069741.002.jpg
case_images: PMC6881771_01_CRIOT2019-1069741.002.jpg
case_images: fig2
case_images: The sizes of the right olfactory bulb and tract were relatively small (Figure 2).
case_images: (a) No tracer accumulated at the right olfactory bulb (red arrow) on the 30 minute images. (b) No tracer accumulated at the right olfactory bulb (red arrow) on the 24 hour images.
case_images: CRIOT2019-1069741.003.jpg
case_images: PMC6881771_01_CRIOT2019-1069741.003.jpg
case_images: fig3
case_images: The tracer did not accumulate at the right olfactory bulb on the 30 minute images, as well as the 24 hour images (Figure 3).
case_images: The right unirhinal PEA threshold was -1.375.
case_images: CRIOT2019-1069741.004.jpg
case_images: PMC6881771_01_CRIOT2019-1069741.004.jpg
case_images: fig4
case_images: One month later, his birhinal PEA threshold was -3.625 and right unirhinal threshold was -1.35, but left unirhinal threshold remained at -1 (Figure 4).
case_images: MRI shows that the right olfactory bulb (red arrow) became larger.
case_images: CRIOT2019-1069741.005.jpg
case_images: PMC6881771_01_CRIOT2019-1069741.005.jpg
case_images: fig5
case_images: The MRI revealed a relatively large right olfactory bulb, as compared with the previous MRI (Figure 5).
case_images: (a) Increased tracer accumulated at the right olfactory bulb (red arrow) on the 30 minute images. (b) Increased tracer accumulated at the right olfactory bulb (red arrow) on the 24 hour images.
case_images: CRIOT2019-1069741.006.jpg
case_images: PMC6881771_01_CRIOT2019-1069741.006.jpg
case_images: fig6
case_images: The 201Tl olfacto-scintigraphy demonstrated increased trace accumulation at the right frontal bulb on both the 30 minute and 24 hour images (Figure 6).