I was just diagnosed in September, mine is also 4.2 cm. My cardiologist told me not to lift more than 25-35 pounds. No NSAIDs. No fluoroquinolone antibiotics. Monitor my BP. Reduce stress. They did start me on low dose Crestor. I don't drink or smoke. Not overweight. I always eat healthy. I woke up one morning in August with soreness in my lower throat and I could feel a pulsating vessel. Echo and CT angiogram showed my dilated aorta. My aorta was displacing the large vessels in my chest. The vessel i was feeling is my right brachiocephalic artery. I am happy to have a diagnosis. I was living with it for many years, not knowing it was there. I now need to see my cardiologist every 6 months. Have my scans. I'm 70 and just retired from nursing in March. I'm grateful nothing happened when I was lifting patients and pushing heavy beds. It's not something I wanted to be diagnosed with, but there are a lot worse things. I am just so very grateful to know it is there and I along with my medical team, will monitor it, until the time comes that I need surgery. It is nice to have the support of others diagnosed with the same thing.