Preferred Label : disappearing ellipse sign;
Definition : Two lucent lines form a thin ellipse on a radiograph of the skull that disappears
on an oblique projection. Suggests linear skull fracture; ellipse results from x-ray
beam hitting inner and outter tables at slightly different angles.;
Source : Eisenberg, Ronald L. Atlas of Signs in Radiology.;
Origin ID : RID35148;
Associated condition(s)
Two lucent lines form a thin ellipse on a radiograph of the skull that disappears
on an oblique projection. Suggests linear skull fracture; ellipse results from x-ray
beam hitting inner and outter tables at slightly different angles.
