Hello! It was my daughter who was diagnosed with 2 metastatic melanoma tumors back in July; a 5 cm in her left lung and a 7 cm in her left femur. Thankfully she lives near enough to John Hopkins in Baltimore that she can drive there and is being treated there. She’s had 4 immunotherapy treatments and her lung tumor has shrunk to half its original size and her tumor i. Her femur is gone. A combination of radiation and immunotherapy dissolved/destroyed it. We are overjoyed. I don’t know what Keytruda is. But find a fascility that will do immunotherapy which was developed specifically for Melanoma cancer and is the most effective against melanoma. Immunotherapy works!