An aneurysm is the enlargement of an artery caused by weakness in the arterial wall. Often there are no symptoms, but a ruptured aneurysm can lead to fatal complications.

An aneurysm refers to a weakening of an artery wall that creates a bulge, or distention, of the artery. 

          Reference: By Markus MacGill, Reviewed by Seunggu Han, MD, https://www.medicalnewstoday.com/articles/156993.php , consulted on June 29th, 2019