title: Radiologic-pathologic correlation of the CT halo sign in invasive pulmonary aspergillosis.
abstract: Invasive pulmonary aspergillosis in the immunocompromised host is difficult to diagnose. Early therapy with amphotericin B improves survival. We correlated early pathologic findings with high-resolution CT of a fixed-inflated air-dried lung obtained from an autopsied patient with invasive pulmonary aspergillosis. Two distinct types of lesions were found radiologically. A large zone of air space consolidation was shown to be a confluent bronchopneumonia, and small halo-like lesions were shown to correspond to a central fungal nodule surrounded by a rim of coagulative necrosis. The halo lesion may represent an early specific sign by which invasive pulmonary aspergillosis can be diagnosed.
mesh_terms: D001228:Aspergillosis / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging* / Q000473:pathology; D008172:Lung Diseases, Fungal / Q000000981:diagnostic imaging* / Q000473:pathology; D008875:Middle Aged; D014057:Tomography, X-Ray Computed