患者女 ,5 4岁 ,汉族。绝经后二年健康体检。超声所见 :于右下腹部可见 9.0ｃｍ× 4.2ｃｍ呈扁圆形的等回声区 ,边界清晰 ,有包膜 ,其内可见不规则的略强回声光团 ,形似肾脏 ,不随体位呼吸 ,改变而移动 (见右图 )。超声诊断 :右下腹腹膜后实性占位性病变 (考虑为叶瘤可能性大 ) Female patient, 5 4 years old, Han nationality. Two years after menopause, physical examination. Ultrasound seen: in the right lower abdomen can be seen 9.0cm × 4.2cm was flat circular echo area, the boundary is clear, there is an envelope, which can be seen within the irregular slightly strong echo light group, the shape of the kidney, does not breathe with the body position, Change and move (see image to the right). Ultrasound diagnosis: retroperitoneal solid retroperitoneal space-occupying lesions (considering the possibility of large tumors)