Figure 8a. Desmoplastic infantile ganglioglioma in a 6-month-old boy with increasing head circumference over a 2-month period. (a) Axial T1-weighted MR image shows a large, heterogeneous mass of the left parietal lobe with surrounding vasogenic edema and marked midline shift. Both soft-tissue (S) and cystlike (C) components are visible. (b) Axial T2-weighted MR image shows the soft-tissue areas as regions of low signal intensity compared with the high signal intensity of the cystic territories. (c) Contrast-enhanced axial T1-weighted MR image shows intense enhancement of the soft-tissue portions of the tumor. (d) Contrast-enhanced coronal T1-weighted MR image shows that the enhancing soft-tissue component contacts the dural sinus (arrow), which shows abnormal nonenhancement, suggestive of dural sinus involvement. At surgery, a portion of the mass remained tightly adherent to the dural sinus.