PMC5014757_01
Neuroimaging findings. (A) Case 1. A coronal attenuation inversion recovery (FLAIR) image shows a transmantle sign in the ventrolateral portion of the right frontal lobe (highlighted in yellow circle). Extensive hypometabolism is evident in the right frontal lobe on FDG-PET. (B) Case 2. Presurgical and postsurgical axial T2-weighted images are shown in the upper left and upper right, respectively. Axial and sagittal FDG-PET images (shown in the lower row) show hypometabolism in the right medial frontal cortex in figure 1B (highlighted in white circle).
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Magnetic resonance imaging disclosed no structural abnormalities. 18F-fluorodeoxyglucose positron emission tomography revealed extensive hypometabolism in the right frontal cortex (Fig. 1).
Compulsive drawing in Case 1. Characters from Japanese cartoons and words written in small letters cover the entire width of the page. Most words are onomatopoeic.
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In her free time, she spent a significant amount of time drawing cartoon characters, which cover each page entirely in a notebook (Fig. 2).
PMC5014757_02
Neuroimaging findings. (A) Case 1. A coronal attenuation inversion recovery (FLAIR) image shows a transmantle sign in the ventrolateral portion of the right frontal lobe (highlighted in yellow circle). Extensive hypometabolism is evident in the right frontal lobe on FDG-PET. (B) Case 2. Presurgical and postsurgical axial T2-weighted images are shown in the upper left and upper right, respectively. Axial and sagittal FDG-PET images (shown in the lower row) show hypometabolism in the right medial frontal cortex in figure 1B (highlighted in white circle).
gr1.jpg
PMC5014757_02_gr1.jpg
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Magnetic resonance imaging disclosed no structural abnormalities. 18F-fluorodeoxyglucose positron emission tomography revealed extensive hypometabolism in the right frontal cortex (Fig. 1).