Alpha Radiation Emitters Device (DaRT) for the Treatment of of Malignant Cutaneous Tumors

This will be a prospective, open label, single arm, multi- center study, assessing the safety and effectiveness of diffusing alpha emitters radiation therapy (DaRT) delivered through radioactive seeds inserted into the tumor. This approach combines the advantages of local intratumoral irradiation of the tumor, as used in conventional brachytherapy, with the power of the alpha radiation emitting atoms, that will be introduced in quantities considerably lower than radiation therapy already used in patients. Cutaneous lesions with histopathological confirmation of malignancy will be treated using DaRT seeds. Reduction in tumor size 9-11 weeks following DaRT insertion will be assessed. Safety will be assessed by the frequency, severity and causality of all Adverse Events (AE).