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Figure 7f.   Desmoplastic infantile ganglioglioma in a 5-month-old boy with central apnea. (a) Axial CT image shows a large, heterogeneous mass of the right temporal region. Cystlike areas (c) combined with mildly hyperattenuating soft-tissue areas (s) are seen. (b) Axial T1-weighted MR image shows heterogeneity within the mass, an appearance similar to the CT appearance. The soft-tissue component appears to be extraaxial. (c) Axial T2-weighted MR image shows that the soft-tissue component is hypointense relative to the brain parenchyma. A mild amount of surrounding vasogenic edema is noted. (d) Contrast-enhanced axial T1-weighted MR image shows intense enhancement of the soft-tissue component. (e) Intraoperative photograph shows the extraaxial location of the mass (indicated by the silver probe). (f) Photograph shows resected specimens, which correlate morphologically with the extraaxial soft-tissue component seen at cross-sectional imaging.