例1.女,1岁。腹部肿物10天。检查:盆腔触及6×6×4cm大小肿物,质硬不活动。临床诊断:恶性肿瘤。手术见,腹膜后肿物呈哑铃状,内见淡黄色细腻脂肪样组织,周围淋巴结肿大。病理检查:带有部分包膜的肿物3×2.5×2cm大小,粉红色,切面细腻。例2.女,2(1/2)岁。下腹部肿物月余。检查:下腹部触及10×6×5cm大小肿物,质硬有压痛,不活动。临床诊断:恶性肿瘤。手术见,腹膜后 Example 1. Female, 1 year old. The abdominal mass was 10 days old. Check: The pelvic cavity touches a 6×6×4cm size mass, hard and inactive. Clinical diagnosis: Malignant tumors. Seeing surgery, the retroperitoneal mass was dumbbell-shaped, with pale yellow delicate fatty tissue inside, and enlarged lymph nodes around. Pathological examination: The mass of the tumor with part of the capsule was 3×2.5×2cm, pink, and the cut surface was delicate. Example 2. Female, 2 (1/2) years old. Lower abdominal mass more than a month. Check: The lower abdomen touches a 10×6×5cm mass, which is hard and tender and inactive. Clinical diagnosis: Malignant tumors. See you after surgery, retroperitoneum