question: Merkel Cell Carcinoma: my husband has been undergone chemo/radiation and now Keytruda (4x) since Jan 2015 for his MCC. He had his armpit lymph nodes removed in 2016, but the lumps continue to multiply on his upper chest area (about 8 lumps), and some smaller ones are now forming on his stomach/back/upper arms. The Dr. told him last week that there is nothing more they can do for him . Question: they now want him to get a Pet Scan, presumably to see if the cancer has spread internally. Is this necessary?; what is the purpose if there is no recourse?? He is 80, and we know things aren t good; it would only cause more stress for him to hear more bad news and/or life timeline.