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Abstract

Background: The gold standard for diagnosing tumor lesions is the result of pathology. Previously, patients had to perform the opened biopsies. Recently, most patients underwent ultrasound - guided core needle biopsy. Objective: recommendations for results and safety of ultrasound-guided core needle biopsy (UCNB) in the diagnosis of abdominal masses in children. Subjects and Methods: From June 2019 to June 2020, there were 105 patients with abdominal solid tumor who had been indicated to perform ultrasound-guided core needle biopsy in the National Children’s Hospital. Results: Of the 105 patients involved in the study, 88 were malignant (accounting for 83.8%) with the majority being neuroblastoma. 100% of patients had been performed procedures successly, but accurate pathological diagnosis reached 95.2%. 10.5% of patients was performed in an emergency clinical situation. Rate of complication with bleeding was 6.7%. Mortality was 1% due to severe hemorhage. Conclusion: Ultrasound-guided core needle biopsy is a method for result successful highly. The rate of severe bleeding complications is acceptable.