Preoperative Interventional Therapy for Childhood Undifferentiated Embryonal Liver Sarcoma: Two Retrospective Cases from a Single Center

摘要

Background Undifferentiated embryonal liver sarcoma (UELS) accounts for only 9 to 15% of all malignant liver tumors in children. Typically, UELS occurs in older children and presents as an abdominal mass. Most UELS are unresectable because of the later diagnosis. The outcome of UELS is very poor, with a 5-year overall survival of?