Is there a relationship between body weight and aaa?

Not really. Weight does not have anything to do with aaa. The most important risk factors are smoking, high blood pressure and age. Genetics is also a big factor as a history of AAA in a parent or grandparent. Basically if you are a smoker and have high blood pressure with a history of AAA in a parent you should have an ultrasound to see if you have an aneurysm.
Body wt and AAA. There is no relationship between body weight and aaa.