Penetrating ulcer with mural hematoma on CT

An axial CT scan through the arch of the aorta (A) shows a penetrating ulcer (arrowhead). Image B is a magnified view and shows a penetrating ulcer (arrowhead) and a small mural hematoma (arrow). Image C is a coronal reconstruction, magnified in D, and shows a focal penetrating ulcer (arrowhead), with a small mural hematoma (D, arrow).