孕妇,26岁,G1P1,孕26周。常规超声检查:胎儿大小正常,于胎儿左侧腹膜后显示一3.5cm×2.6cm×3.2cm不均质性较底回声区,边界尚规则,左肾挤至左下方(图1)。超声诊断:1.晚孕,胎儿存活;2.胎儿左侧腹膜后实质不均质性包块(肾上腺来源)。足月顺产分娩一周后,对婴儿行超声检查,见包块 Pregnant woman, 26 years old, G1P1, 26 weeks pregnant. Conventional sonography: normal fetal size, showing a 3.5 cm × 2.6 cm × 3.2 cm inhomogeneity in the left posterior portion of the fetus compared to the bottom echogenic zone, the border is still rules, the left kidney squeezed to the lower left (Figure 1). Ultrasound diagnosis: 1. Late pregnancy, fetal survival; 2. Fetal left retroperitoneal substantive heterogeneous mass (adrenal gland). Full-term delivery of a week after birth, the baby underwent ultrasound examination, see the mass