患女,7岁,左中腹发现肿块,呕吐10天入院.患者近1月消瘦(体重减2kg),阵发性腹痛,呕吐,以进餐后明显并渐加重.既往无特殊病史.体检:消瘦,面色苍白,皮肤、巩膜无黄染,浅表淋巴结未触及.心肺正常.腹平软,脐左上方触及一个5.5cm×4.Ocm包块,边界不清、质韧、表面不规整、触痛、位置固定,肝、脾、肾未扪及,肠呜音亢进,无血管杂音.血常规:Hb55g/L,RBC2.3×10~(12)/L,WBC3.3×10~9/L,No.57.B超提示左中腹有5.0cm×3.5cm低密度回声影像,提示胰腺肿瘤;钡餐示:左中腹小肠钡剂不通畅,有大约3cm的肠腔压迫迹像,考虑后腹膜肿瘤.初步诊断:(1)左中腹(后腹膜)肿瘤(性质待诊)并不完全性肠梗阻,(2)贫血原因待查.部腹探查:无腹水,肝、胃、脾、肾正常,小肠系膜根部 The female patient, 7 years old, had a mass in the left mid-abdomen and was admitted to the hospital 10 days after vomiting. She was emaciated (weight reduced by 2 kg), paroxysmal abdominal pain, and vomiting. She became apparent and gradually heavier after eating. No previous medical history. Physical examination: weight loss , Pale, skin, sclera without yellow stain, superficial lymph nodes not touched. Cardiopulmonary normal. Abdomen soft, upper umbilical touch a 5.5cm × 4.Ocm mass, the border is unclear, tough, surface irregular, touch Pain, fixed position, liver, spleen, kidney and sputum, intestinal hyperactivity, no vascular noise. Blood routine: Hb55g/L, RBC2.3×10~(12)/L, WBC3.3×10~9/ L, No. 57. B ultrasound prompted a 5.0cm × 3.5cm low-density echo image of the left mid-abdominal region, suggesting pancreatic tumor; barium meal indication: left mid-abdominal small intestinal tincture is not smooth, there is about 3cm of the bowel cavity pressure image, consider the posterior peritoneum Tumors. Preliminary diagnosis: (1) left mid-abdominal (retroperitoneal) tumors (nature) are not complete intestinal obstruction, (2) cause of anemia to be investigated. Department of abdominal exploration: no ascites, liver, stomach, spleen, kidney normal , mesenteric root