Thymic notch sign

Last revised by Yusra Sheikh on 1 Nov 2019

The thymic notch sign represents the normal thymus in a newborn on a frontal chest radiograph. Interruption of the cardiac silhouette forms a notch, which may be seen on either side, but more frequently is seen on the left side.

 

See also

 

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.