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贫血常常是肿瘤性疾病的表现。肿瘤引起贪血的常见原因有:(1)肿瘤引起营养不良,比如食管癌患者由于进食困难而造成营养不良,同时肿瘤生长会消耗体内的营养物质。(2)肿瘤发生骨髓内转移后,可干扰骨髓的造血功能,破坏造血细胞,抑制红细胞的生长。(3)肿瘤本身导致出血。出血是恶性肿瘤所致贫血中最重要的因素,比如消化道癌的表面坏死和溃疡常引起出血,这种情况在胃癌、大肠癌最多见。(4)肿瘤常引起各种急、慢性炎症,而感染可抑制骨髓造血功能,加重贫血。中老年人一旦发现贫血,就要尽快查找引起贫血的病因。医生通过详细了解病史和
Anemia is often a manifestation of neoplastic disease. Common causes of tumor-induced blood transfusion include: (1) Tumor-induced malnutrition, such as malnutrition due to eating difficulties in esophageal cancer patients, and tumor growth can consume nutrients in the body. (2) After bone marrow metastasis occurs in the tumor, it can interfere with the hematopoietic function of the bone marrow, destroy hematopoietic cells, and inhibit the growth of red blood cells. (3) The tumor itself causes bleeding. Bleeding is the most important factor in anemia caused by malignant tumors. For example, surface necrosis and ulceration of digestive tract cancer often cause bleeding. This condition is most common in gastric cancer and colorectal cancer. (4) The tumor often causes a variety of acute and chronic inflammation, and infection can inhibit bone marrow hematopoietic function and increase anemia. Once the elderly have found anaemia, they must look for the cause of anemia as soon as possible. Doctors learn more about history and