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<正>Purpose To evaluate the value of ultrasound-guided percutaneous puncture biopsy in diagnosis and treatment of children liver diseases.Methods Clinical data of 47 pediatric patients with liver diseases(29 boys and 18 girls,aged 0.3—13 years) were analyzed retrospectively.Among them,there were 16 children(median age of 4.5 years old) with liver space-occupying lesions and 31 children