Ask for written procedure from your doctor and go over what is specific to your case. Which artery it will be inserted in to insert a medical device that places a stent (usually thoracic region) . I found great explanation just searching internet as well. My husband had one in 2019 to place stent in thoracic region after they did emergency repair in 2018, they did additional repairs to aortic arch by opening him up, then closed and 24 hours later to address aortic dilation in thoracic region used the tevar procedure. He still has additional aneurysm in abdominal area which has stayed stable. What we were not told was our medical device was not approved yet and we were part of a test group. In 2020 our device was recalled by the FDA . because of various reasons. So my husband has CT scans every 6 months to monitor for endoleaks or new aneurysms created from the stent, It is less invasive procedure for your body, but as all procedures be aware of side affects for stents in general, which are life saving but are monitored and can result in additional procedures over time. We are now at year 6 post surgery and I am thankful for no other additional surgeries but the next one will require a customized stent by a specialist if the aneurysm reaches the recommended size over time for repair. It affects three arteries. We are close to that window.