类白血病反应是指血液或骨髓中改变己达必须郑重考虑某种类型白血病的程度,而最终证实并非该病的情况。实验室改变有以下三型,单独或联合出现,它们是:(1)白细胞增多超过内在疾患的预期程度(有时以白细胞计数>30～50×10~9/升为依据);(2)血中出现异常而且往往是不成熟的细胞,而无论其白细胞总数如何;(3)骨髓中不成熟和(或)异常细胞含量增高。正确诊断类白血病反应而非白血病,极为重要。即使只是白血病的一点暗示,也会引起病人深切的惊恐。大多数白血病治疗方法的本身,就会威胁生命的安全,因此必须防止把这种疗法应用于证实为类白血病反应的人。有时解决这种疑难的唯一方法是治疗其内在疾患(或估计的内在疾患),看血液和(或)骨髓细胞象能否持久恢复正常。有些类型的白血病,诊断标准还很不严谨,有时只有在 Leukemia-like response refers to the degree of change in the blood or bone marrow that must be given solemn consideration for a certain type of leukemia, which ultimately confirms that it is not the case. There are three types of laboratory changes, either alone or in combination: (1) Excessive leukocytosis over the expected extent of an underlying condition (sometimes based on a white blood cell count> 30-50 × 10-9 / liter); (2) blood In the abnormal and often immature cells, regardless of the total number of white blood cells; (3) bone marrow immature and (or) abnormal cell content increased. Correct diagnosis of leukemic reactions rather than leukemia, is extremely important. Even if it is just a hint of leukemia, it can cause deep panic in the patient. Most leukemia treatments themselves threaten the safety of life and must therefore be prevented from being applied to people who have been proven to be leukemoid-resistant. Sometimes the only way to deal with this problem is to treat the underlying disease (or an estimated underlying condition) and see if the blood and (or) bone marrow cells are able to recover permanently. Some types of leukemia, the diagnostic criteria are still not rigorous, and sometimes only