Do you have other siblings besides your brother. My mother and 5 of us children have had abdominal aortic aneurysm’s so it is hereditary just like they say. I am the youngest and was able to have mine followed for about 10 years before they put a stent in. The others all had to be opened up. What I’m getting at is to get any other brothers or sisters to get checked. We are encouraging all the nieces and nephews to get checked too. I am 78 and all of my children and nieces and nephews are in their 50’s and 60’s. Today I am having surgery to reline about 10 inches of my thoracic aorta starting just below the arch. I am lucky again and the repair will be through the groin. Did not expect to be having another problem with my aorta but I guess this is not unusual. I hope others can answer your questions about your chest pain and cough.