Preferred Label : sail sign of chest;
Definition : A triangular shadow with sharp upper lateral border and lower lateral angle in the
mediastinum on a frontal radiograph; may be unilateral or bilateral. Represents a
normal thymus.;
Source : Eisenberg, Ronald L. Atlas of Signs in Radiology.;
Origin ID : RID35509;
Associated condition(s)
A triangular shadow with sharp upper lateral border and lower lateral angle in the
mediastinum on a frontal radiograph; may be unilateral or bilateral. Represents a
normal thymus.
