Presentation
Chronic cough.
Patient Data
Age: 13 years
Gender: Female
Frontal

Image shows findings of left atrial enlargement.
There is widened carina angle; double density around the right heart border and left atrial enlargement (third mogul sign).
Case Discussion
Left atrial enlargement can be congenital or acquired and is usually due to valvular heart diseases such as mitral stenosis or regurgitation.