Motor Speech Apraxia in a 70-Year-Old Man with Left Dorsolateral Frontal Arachnoid Cyst: A [¹⁸F]FDG PET-CT Study

Figure 1

Corresponding transaxial MRI, CT, and FDG PET images (a) with superimposed FDG PET -score images on (b). Findings show a left frontal extra-axial anatomic lesion compatible with arachnoid cyst and focally localized adjacent left dorsolateral frontal cortical glucose hypometabolism on FDG PET. Glucose metabolic reductions greater than 1.65 SD below the normal mean are shown in color overlay.

(a)

(b)