The fungus aspergillus can cause a variety of pulmonary disorders. Aspergilloma is a noninvasive aspergilluscolonization of virtually any type of preexisting pulmonary cavity or cystic space. Invasive pulmonaryaspergillosis is serious, usually fatal infection in patients being treated with immunosuppressants or who havechronic debilitating disease. Allergic bronchopulmonary aspergillosis is charaterized clinically by asthma, bloodand sputum eosinophilia and positive immunologic reation to aspergillus antigen. Awareness of the radiographic andCT findings of pulmonary aspergillosis is important in making the diagnosis of aspergillus-caused pulmonarydisorders. In this pictorial essay, we illustrated various radiological findings of pulmonary aspergillosisfocused on CT findings correlated with gross pathologic specimens.