贫血病因多查因是关键──１例结肠癌误诊教训女，４６岁，教师。１９９０年５月因家人发现患者面色苍白而到某大医院住院检查。患者诉大便素来“正常”。有胃痛史２０余年，时有吐酸水，无便后滴血史，月经量不多。实验室检查：血红蛋白５０ｇ／Ｌ，白细胞９．２×１０９... The cause of multiple causes of anemia is the key - 1 case of colorectal cancer misdiagnosis of female, 46 years old, teachers. In May 1990, the family was found to be pale and went to a major hospital for examination. The patient complained that the stool was “normal”. There is a history of stomach pain for more than 20 years. There is a history of vomiting acid and water. There is no history of dripping blood after a stool, and the amount of menstruation is not much. Laboratory tests: hemoglobin 50g / L, white blood cells 9.2 × 109 ...