Earlier quoted context omitted.
Do pilots have similarly increased rates? Or does it likely correlate with lifestyle factors (sunbaking, smoking etc).
After some googling I found a few studies that seem to show an increased risk for pilots as well, particularly skin cancer. I think the increased risk of skin cancer is interesting since that would (layman's speculation) probably be the most affected by radiation. https://pubmed.ncbi.nlm.nih.gov/12862322/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5559846/
Perhaps aircraft should add an UV-A blocking layer to their windows?
I don't think increased radiation levels would contribute differentially to skin cancer, because we're talking about gamma rays.