钩虫病是农村常见病。临床以慢性失血造成的贫血较多见，但引起消化道重度出血较少。１９８７年以来，笔者共遇４例该病引起的大出血。１临床资料１．１一般资料女３例，男１例；年龄４２～７１岁。其中２例为市郊菜农。便血量２４ｈ最多者达１８００～２５００ｍｌ。入院... Hookworm is a common disease in rural areas. Clinical anemia caused by chronic blood loss is more common, but causes less severe bleeding in the digestive tract. Since 1987, I encountered a total of 4 cases of bleeding caused by the disease. 1 Clinical data 1.1 General information Female 3 cases, 1 male; aged 42 to 71 years. Two of them were farmers in the suburbs. 24 hours of blood in the most up to 1800 ~ 2500ml. Admission ...