I’m 40 And Have Been Lifting Weights, Running And Exercising

I’m 40 and have been lifting weights, running and exercising my whole life. I eat well and I do not drink, do drugs or anything abnormally unhealthy. I was told after a sonogram that I have large blood vessels in my liver and they want to do a CT scan now. The only issues I ever had and continue to have is IBS issues which I’ve had since I was 18. Can you please tell me what you think is going on? Thank you