Preferred Label : third mogul sign;
Definition : Abnormal well-defined projection from the left mediastinum near the level of the main
stem bronchus and pulmonary artery, resembling a mound of snow on a frontal radiograph.
Suggests enlargement of left atrial appendage, often due to rheumatic heart disease.;
Source : Eisenberg, Ronald L. Atlas of Signs in Radiology.;
Origin ID : RID35630;
Associated condition(s)
Abnormal well-defined projection from the left mediastinum near the level of the main
stem bronchus and pulmonary artery, resembling a mound of snow on a frontal radiograph.
Suggests enlargement of left atrial appendage, often due to rheumatic heart disease.
