The RIC-Mel database has been approved by French health authorities, both ethically and for confidentiality of data (CCTIRS and CNIL). The database is available on the internet at any given moment thanks to a secure connection. All data are treated confidentially. The active file of patients with melanoma from each participating center is available in the database. All patients agreed to participate may be included in the database, regardless of their stage. Clinical data are collected thanks two forms :