Atypical MOLes and Melanoma Early Detection Study (MoleMed)

Inclusion Criteria: Cohort 1 (retrospective): * Histologically confirmed diagnosis of melanocytic neoplasm of the skin or mucous membranes (benign, malignant or with unclear potential); * The presence of a paraffin block with a tumor suitable for molecular genetic analysis; * Signed informed consent form for living patients (for deceased, signing of a consent form with legal representatives is not required); * Patient's age is over 18 years for the period of inclusion in the study (at the time of signing the consent form for living patients or for the excision biopsy period for deceased patients); * Known clinical data of the patient (gender, age, skin phototype), hereditary history, medical history and follow-up of treatment outcomes for at least 5 years 2\. Cohort 2 (retrospective): * Histologically confirmed diagnosis of melanocytic neoplasm of the skin or mucous membranes (benign, malignant or with unclear potential); * The presence of a paraffin block with a tumor suitable for molecular genetic analysis * The presence of cytological preparations (at least 2 glasses) of the primary tumor with tumor material * Signed informed consent form for living patients (for deceased, signing of a consent form with legal representatives is not required); * Patient's age is over 18 years for the period of inclusion in the study (at the time of signing the consent form for living patients or for the excision biopsy period for deceased patients); * A known medical history and follow…