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患者女 ,5 6岁 ,农民 ,于 1999年 3月 7日因左上肢外伤而在当地医院住院。体检时发现腹部一肿块 ,质软、有轻压痛 ,于 1999年 3月 11日来我院门诊 ,拟“肝囊肿、右后腹膜肿块”收住入院。Ｂ超检查 :下腔静脉前方探及一 8.5ｃｍ× 4.6ｃｍ的低回声实性团块 ,边界尚清 ,内部回声?
A female patient, 5-6 years old, was admitted to a local hospital on March 7, 1999 due to a traumatic left upper limb. A mass was found on the abdomen during the physical examination, which was soft and tender. On March 11, 1999, the patient was admitted to our hospital. The liver cyst and right retroperitoneal mass were admitted to the hospital. B-ultrasonic examination: In front of the inferior vena cava and probe an 8.5cm × 4.6cm hypoechoic solid mass, the boundary is still clear, internal echo?