The CT and plain chest film abnormalities in eight patients with invasive pulmonary aspergillosis (IPA) are described and compared. The various radiologic findings of IPA were (sub)segmental and patchy consolidation, cavitation and an air crescent sign. CT had a higher sensitivity for multiplicity of lesions and cavitation compared with the plain chest film. Because these abnormalities are keypoints of the diagnosis, CT is recommended in patients suspected of IPA.