患儿女,8岁。因颈后包块伴疼痛半个月就诊。专科检查:颈椎C2~C3右侧触及一大小约3cm×2cm包块,局部压痛,头后仰受限。超声检查:经背侧探测颈椎C2~C3右侧周围软组织内见一大小约3.2cm×1.5cm低回声团块,边界清晰,形态欠规则,内部回声不均匀,内见环形钙化及骨样强回声,团块累及颈椎C2~C3椎体,其骨质破坏、缺损(图1),CDFI:团块周边见不连续血流信号,团块内部 Children with children, 8 years old. Due to neck mass with pain half a month treatment. Specialist examination: Cervical C2 ~ C3 right touch a size of about 3cm × 2cm mass, local tenderness, head backward limited. Ultrasound examination: the back of the cervical C2 ~ C3 around the soft tissue around the right to see a size of about 3.2cm × 1.5cm hypoechoic mass, clear boundaries, the rules are irregular, the internal echo uneven, see inside the ring calcification and bone-like strong Echoes, clumps involving cervical C2 ~ C3 vertebral body, the bone destruction, defects (Figure 1), CDFI: see the continuous peripheral blood flow signal block, the internal mass