Results:
A total of 169 children were included in our analysis. 87.0% of patients underwent PCNB for abdominal and pelvic masses. 79.1% of biopsies were performed under local anesthesia. There were 141 malignancies and 28 benign lesions confirmed by surgery. The most common malignancy was neuroblastoma (73), and the most common benign condition was fibromatosis. The diagnostic yield was 94.1%. The success rate of PCNB in determining benign and malignant conditions was 94.3% (150/159). Consistency between PCNB and final diagnoses was found in 143 cases, giving a total accuracy of 89.9%. The accuracy for diagnosing malignancies was 96.8% (122/126), and for benign diseases 87.5% (21/24). The difference was not statistically significant (p=0.0818). Severe complications occurred in 6 patients (3.5%). No evidence of needle tract dissemination was found.