In Vivo Liquid Biopsy of Melanoma (Cytophone)

Inclusion Criteria: * Histological documented diagnosis of melanoma; * Participants having provided informed consent with signature on informed consent form: the informed consent process should be complete with full discussion of all requirements and possible risks; * Must be able to sit for up to 60 minutes. Exclusion Criteria: * Unable to provide informed consent to participate in the study, such as a mental condition rendering the participant unable to understand the nature, scope, and possible consequences of the study; * Clinically relevant cardiovascular, hepatic, neurological (e.g., evidence of organic brain syndrome), endocrine, or other major systemic disease making implementation of the protocol or interpretation of the study results difficult or that would put the participant at risk by participating in the study; * Persistent significant or severe infection, either acute or chronic; * Pregnant or breast-feeding women or those who plan to become pregnant during the study; * Women of childbearing potential not protected by effective contraceptive method of birth control and/or who are unwilling or unable to be tested for pregnancy; * Any known history of severe preexisting constipation.