title: Reversed Halo Sign: What Lies Beneath?
authors.affiliation: Servicio de Neumología, Centro Hospitalario de Trás-os-Montes e Alto Douro, Vila Real, Portugal. Electronic address: lu_maria_nascimento@hotmail.com.
authors.forename: Luisa María
authors.initials: LM
authors.lastname: Nascimento
authors.affiliation: Servicio de Neumología, Centro Hospitalario de Trás-os-Montes e Alto Douro, Vila Real, Portugal.
authors.forename: Ana
authors.initials: A
authors.lastname: Fernandes
mesh_terms: D000072226:Computed Tomography Angiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed