Preferred Label : signet ring sign of chest;
RADLEX synonyms : pearl ring sign;
Definition : Soft-tissue attenuating circle attached to larger soft-tissue attenuating ring with
hypoattenuating center visible on lung CT scans, resembling a signet ring. Indicates
bronchiectasis; circle represents pulmonary artery, and ring represents air-filled,
thick, dilated bronchus.;
Source : Radiology 1999; 212:67-68. Fleischner Society;
Origin ID : RID35542;
Associated condition(s)
Soft-tissue attenuating circle attached to larger soft-tissue attenuating ring with
hypoattenuating center visible on lung CT scans, resembling a signet ring. Indicates
bronchiectasis; circle represents pulmonary artery, and ring represents air-filled,
thick, dilated bronchus.
