After having a third Melanoma 8 years ago the first was negative and most recently 2 were positive 1 removed 5 years ago and 1 more 6 months ago, this last time 2 Lymph Nodes that were negative we have decided that the best move forward would be to start Keytruda. I have just had my first Keytruda infusion and feel great. No obvious side effects at this point, no loss of energy or pain!