She said that in most cases, the participants had been diagnosed with stage 1 disease, when melanoma is often easily treated and has a five - year survival rate of 98 percent. (sciencedaily.com)
The overall contribution of chemotherapy to five - year survival in American adults was 2.1 percent. (cancertutor.com)
One - year survival after diagnosis is only 20 percent. (sciencedaily.com)