Diagnosis of Melanoma (IMAGE) Samara University Caption The efficiency of oncology treatment is directly connected with the timeliness of their detection. For instance, for melanoma -- the most aggressive form of skin tumour detected at the first stage -- five-year survival rate after the treatment makes 98 percent and does not exceed 15 percent with diagnostics at the fourth stage. Credit Samara University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.