肺真菌感染分原发和继发感染。肺真菌原发感染很少见,而且与宿主因素可无相关性。继发感染多继发于宿主的免疫功能受损期间,如慢性消耗性疾病、粒细胞减少、长期使用免疫抑制剂、长期使用抗生素、肿瘤放化疗等。由于免疫功能受损宿主的增加、抗生素和免疫功能抑制等的广泛应用 Pulmonary fungal infection in primary and secondary infections. Primary pulmonary fungal infection is rare, and may not be related to the host factor. Secondary infection secondary to the host immune function impaired, such as chronic wasting disease, neutropenia, long-term use of immunosuppressive agents, long-term use of antibiotics, chemotherapy and so on. Due to increased immune function impaired host, antibiotics and immune function inhibition of the wide range of applications