患者 ,男 ,5 7岁 ,因贫血伴大便潜血阳性 2年 ,间歇阵发性腹痛伴恶心呕吐 1年 ,加重半月入院。患病以来曾多次检查均示低蛋白血症 ,时有血淀粉酶升高 ,偶有大便潜血阳性。入院前半年内曾反复 4次行ＣＴ和 /或ＭＲＩ检查 ,报告均无异常。入院前 1周行ＥＲＣＰ检查 ,并于“十二指 The patient, male, 57 years old, had positive occult blood with anemia for 2 years, intermittent paroxysmal abdominal pain with nausea and vomiting for 1 year, and he was admitted to the hospital half an month later. Many times since the onset of illness, hypoimmunoproteinemia has been shown on several occasions, with elevated serum amylase levels and occasional positive fecal occult blood. CT and/or MRI examinations were performed 4 times in the first half of the hospital admission. No abnormalities were reported. An ERCP examination was performed 1 week before admission and