leukocytopenia

例句：

1. 1. He was diagnosed with leukocytopenia after a severe infection.
   他因严重感染被诊断出白细胞减少症。
2. 2. The patient's condition worsened as the leukocytopenia progressed.
   随着白细胞减少症的进展，患者的病情恶化了。
3. 3. Leukocytopenia can be caused by various factors, including chemotherapy and radiation therapy.
   白细胞减少症可以由各种因素引起，包括化疗和放疗。