FIGURE 3. ¹²³I-MIBG scintigrams. (A) Whole-body scan. (B) SPECT sagittal image (upper) and SPECT coronal image (lower) of 2-y-old boy, who had suffered from Horner’s syndrome after operation for tumor originating in thoracic sympathetic nervous trunk. There is laterality in accumulation in chest. SPECT demonstrated apparent nape-of-neck accumulation only on right (healthy) side (arrows).