title: The sail sign.
abstract: Radiological terminology includes a number of interesting and often amusing terms intended to help us understand and remember the pathological abnormality being described. What radiological sign is illustrated in Fig. 1 and what condition does it represent?
authors.affiliation: Children's Hospital, Birmingham.
authors.forename: S
authors.initials: S
authors.lastname: Chapman
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007223:Infant; D011859:Radiography; D013950:Thymus Gland / Q000000981:diagnostic imaging*