Hi my brother has been diagnosed with melanoma cancer and has had 8 chemo treatments. I think he is confused as he is now saying he cancer from his neck is gone (he had a pet scan) but the cancer in his stomach is still healing. Is it possible to have melanoma in the stomach. What he is saying sounds more like lymphnoma?? He lives 6 hours away so I am not able to be at any of his appointments. Thank you for your time.