Could Low Dose Radiation Years Ago Be The Cause Of So Much Skin Cancer?

I worked for veterinarians for 25 years. I was an assistant then later a tech. I had so much skin cancer on my face and forearms. We were as careful as we could be when doing the x-rays. We wore our tags and lead aprons. Still the thought occurred to me this might have been why I had such deep skin cancer. I know sun damage would be common to those areas but I used to lay in the sun and why am I not having the skin cancers on my back too? That is where I always got burned. I started the Veterinarian job in 68 quit in 94 that is a lot of being around and using the x ray machine. Thoughts? Not trying to start trouble just wondering if this could have been a factor. The cancer is all cleared up now. :^)
Thanks for your thoughts Chris