患者女,12岁。因双下肢肌肉酸痛20d,发热7d就诊。超声示:于脾与左肾之间可见一高回声团,边界尚清,内回声不均匀,大小约95mm×85mm×70mm,CDFI:病变周边可见部分血流信号环绕,内可见条状血流信号(图1a)。腹膜后可见一巨大低回声团,沿腹主动脉走行,并包绕沿途分支,形态不规则,呈分叶状,内回声不均匀,大小约205mm×92mm×63mm(图1b)。超声诊断:脾与左肾之间肿物;腹膜后巨大肿物。CT平扫及增强:左肾上腺区及腹膜后区多发较大不规则软组织肿物,密度不 Female patient, 12 years old. Due to muscle pain in both lower extremities 20d, fever 7d treatment. Ultrasound showed: between the spleen and the left kidney can be seen a high echo group, the boundary is clear, the echo is not uniform, the size of about 95mm × 85mm × 70mm, CDFI: surrounding the lesion visible part of the blood flow signal, visible within the strip of blood flow Signal (Figure 1a). Retroperitoneal visible a huge hypoechoic group, walking along the abdominal aorta and branches around the way, irregular shape, lobulated, uneven internal echo, the size of about 205mm × 92mm × 63mm (Figure 1b). Ultrasound diagnosis: the spleen and the left kidney between the tumor; a huge retroperitoneal mass. CT scan and enhancement: left adrenal and retroperitoneal multiple large irregular soft tissue mass, the density is not