NED

What does NED mean? I was told this by my doctor after the last scan and so I guess it means I’m in remission?? Can stage four patients be in remission? That sounds very funny to me. Here’s the definition google has out there in the intranet...
“When breast cancer advances to stage 4, the five-year survival rate is about 26 percent. There is currently no cure for stage 4 cancer. But for some, it can be treated and managed. ... For many women who believe their breast cancer is in remission, the reality is that recurrence of the disease is likely.”
So I guess NED is a good trying but I shouldn’t get hung up on it because it won’t last forever.