title: The yin-yang sign.
authors.affiliation: Department of Radiology and Interventional Radiology, University Degli Studi, Perugia, Italy. tommasolupattelli@hotmail.com
authors.forename: Tommaso
authors.initials: T
authors.lastname: Lupattelli
mesh_terms: D000783:Aneurysm / Q000000981:diagnostic imaging*; D017541:Aneurysm, False / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D011860:Radiography, Abdominal; D014057:Tomography, X-Ray Computed