Aneurysm with thrombus versus thrombosed dissection

Aneurysm with thrombus versus thrombosed dissection

It can be difficult to differentiate an aneurysm with thrombus from a dissection with a thrombosed false lumen.
If there are intima calcifications this will be very helpfull.
A false lumen displaces the intimal calcifications.

LEFT: Dissection with a thrombosed false lumen.
RIGHT: Aneurysm with thrombus on the inner side of the intimal calcifications.