患儿男，6岁，体检发现腹部无病性包块逐渐增大20天入院。患儿入院前无腹痛、腹胀、腹泻、心悸、多汗及其它不适，肿块进行性增大，体重无下降，一般情况良好。查体;血压12／skPa，浅表淋巴结未及肿大，心肺（一），左中腹可触及质硬、表面光滑、固定、无触痛的肿块。B超、CT检 The boy, 6 years old, had physical examination and found that the abdominal disease-free mass was gradually enlarged for 20 days. The patient had no abdominal pain, bloating, diarrhea, palpitations, excessive sweating, and other discomfort before admission, and the mass was progressively increased without loss of body weight and was generally good. Examination; blood pressure 12/skPa, superficial lymph node enlargement, heart and lung (a), the left mid-abdominal can touch hard, smooth surface, fixed, no tender mass. B-ultrasound, CT examination