![](/the-learning-zone/sites/default/files/learning-sessions/ls101/B_7_5_005_US_AAA/irreg_clot.jpg)
Abnormal appearances can vary immensely, but one common appearance, besides a fusiform aneurysm, is the presence of clot within the lumen.
In this image of a very large aneurysm, there is irregular clot and distal embolisation was the presenting symptom. Click the image to see a larger version.