患者,女,62岁,因腹部肿物进行性增大,腹胀,消瘦二个月来诊,两年前因患腹膜后脂肪瘤手术治疗,切除肿瘤重达6.5ｋｇ。入院后检查:生命体征平稳、心肺正常。腹部略膨隆,中腹部可触及20ｃｍ×20ｃｍ肿物,表面光滑,边界不清,活动度不佳,叩诊实音,无移动性浊音,肠鸣音正常。ＣＴ报告 The patient, female, was 62 years old. He had an abdominal enlargement, abdominal distension, and weight loss for two months. He had a surgical treatment of a retroperitoneal lipoma two years ago. The tumor weighed 6.5 kg. After admission, check-ups were performed with stable vital signs and normal heart and lung function. The abdomen is slightly bulging, with a 20cm x 20cm mass in the mid-abdomen, smooth surface, unclear borders, poor mobility, real palpation, no moving dullness, and normal bowel sounds. CT report