title: CT "halo sign" in pulmonary tuberculoma.
abstract: The CT halo sign has been described as the CT finding of a low-attenuation zone surrounding a pulmonary nodule. It is an early clue to the diagnosis of invasive pulmonary aspergillosis. We describe a case of CT halo sign associated with a pulmonary tuberculoma. Therefore, we think that a diagnosis other than invasive pulmonary aspergillosis should be considered in the presence of the CT halo sign in immunocompetent patients.
authors.affiliation: Service of Diagnostic Imaging, Piemonte Hospital, Messina, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Gaeta
authors.forename: S
authors.initials: S
authors.lastname: Volta
authors.forename: S
authors.initials: S
authors.lastname: Stroscio
authors.forename: P
authors.initials: P
authors.lastname: Romeo
authors.forename: I
authors.initials: I
authors.lastname: Pandolfo
mesh_terms: D001228:Aspergillosis / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D008172:Lung Diseases, Fungal / Q000000981:diagnostic imaging; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014375:Tuberculoma / Q000000981:diagnostic imaging*; D014397:Tuberculosis, Pulmonary / Q000000981:diagnostic imaging*