I am a 56 year old very phycally active male. I had an excision done on my leg and a sentinel lymph node biopsy and removal. The pathology came back showing that the lymph node was clean and the excision complete. I spoke with my brother in law, who is a surgeon, and he said that I have a 90% chace of survival for 5 years and an 80% chance for 10 years. Does this mean that my prognosis beyond that time is dim?