例１男，２５岁，上腹部隐痛，乏力，贫血，食欲下降４月余来院门诊。查：营养差，贫血貌，无黄染，心肺正常，腹软，肝脾未及，剑突下轻度压痛。血常规：红细胞２．８×１０１２／Ｌ，血红蛋白８０ｇ／Ｌ，拟诊“贫血原因待查”、“消化性溃疡出血”，胃镜检查见：胃粘膜苍白 Example 1 Male, 25 years old, upper abdominal pain, fatigue, anemia, loss of appetite for more than 4 months to hospital. Check: poor nutrition, anemia appearance, no yellow dye, normal heart and lung, abdominal soft, liver and spleen is not, mild tenderness under the xiphoid. Blood: erythrocytes 2.8 × 1012 / L, hemoglobin 80g / L, proposed diagnosis of “causes of anemia to be investigated”, “peptic ulcer bleeding,” gastroscopy see: gastric mucosa pale