title: The "beak" sign.
authors.affiliation: Department of Radiology, Wake Forest Baptist Medical Center, Wake Forest University School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA. puho@wakehealth.edu.
authors.forename: Pui-Nn
authors.initials: PN
authors.lastname: Ho
authors.affiliation: Department of Radiology, Wake Forest Baptist Medical Center, Wake Forest University School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA.
authors.forename: Raymond B
authors.initials: RB
authors.lastname: Dyer
mesh_terms: D003287:Contrast Media; D003937:Diagnosis, Differential; D003952:Diagnostic Imaging; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000000981:diagnostic imaging*
chemical_list: D003287:Contrast Media