Figure 10: Case report 8. Ten-year-old boy with a big oval mass in the right carotid sheath. Histology: Ganglioneuroma. MRI (left): STIR in coronal sections with numerous low-signal flow voids (arrows) as a sign of high blood flow. Bright contrast- enhancement in the early phase (not shown). Conventional angiography (right): Tumor blush after selective canulation of the right ascending pharyngeal artery. Subsequent preoperative embolization. (Courtesy of Prof. Hans Henkes, Department of Neuroradiology, Klinikum Stuttgart, Germany).