Melanoma. While any melanoma patient faces the risk of melanoma spread, a cancer that is less than 1 millimeter (.03 inches) thick may be located in just the top layers of the skin. In such a case, it may be less likely to spread, allowing a doctor to remove it and leave the patient free of cancer in some cases. Unfortunately, melanoma may reoccur, even after successful treatment.
Melanoma. Melanoma can spread pretty much to anywhere in the body ( liver, lung, brain, bone, GI tract, eyes etc) --via blood and lymphatic system. Treatment for advanced stage/stage IV as for now is ipilimumab- which has demonstrated improvement in survival in clinical trial. For more info go to www.Nccn.Com.