Hello there , i am 73 and have a BCC on the tip of my nose and have been told i need a second excision to go deeper to the cartilage this time. The surgeon will perform a forehead flap surgery and is hopeful for a god cosmetic result. 
My second option is to have radiotherapy instead. He seemed to think the side effect of skin changes would only come 20+ years after radiotherapy but on many online forums (including this one) there are patients who have had permanent discolouration only months after the treatment. Can you confirm this is likely to happen ? 
The prospect of further surgery is daunting but i would like a good cosmetic finish. 
thank you for your help!