Overview of Aortic Aneurysms By Mark A Farber, MD, FACS, University of North Carolina; Federico E Parodi, MD, University of North Carolina School of Medicine Reviewed / Revised Jun 2022 | Modified Sep 2022 View Patient Education Topic Resources CTA (Coronal View) of Thorax... CTA (Coronal View) of Abdomen... CT of Thorax Showing Anatomy... Endovascular Stent Graft Overview of Aneurysms Aneurysms are abnormal dilations of arteries caused by weakening of the arterial wall.