白细胞减少症在肿瘤临床上很常见,肿瘤病人尤以在接受大剂量化疗或放疗的情况下更易并发白细胞减少。这一血液学变化常是导致肿瘤并发感染的重要原因。一般认为,末梢血白细胞计数少于1000/立方毫米时即有感染的可能,当白细胞下降至500/立方毫米以下时,严重感染的机会就更高。白细胞 Leukopenia is clinically common in cancer, and cancer patients are more likely to have leukopenia especially when receiving high doses of chemotherapy or radiation. This hematological change is often the leading cause of concurrent tumor infection. It is generally believed that there is a possibility of infection when the peripheral blood leukocyte count is less than 1000 per cubic millimeter. When the white blood cells fall below 500 per cubic millimeter, the chance of severe infection is even higher. leukocyte