This is a multi-center clinical study enrolling up to 30 participants (15 patients in each cohort). The primary objective of the study is to evaluate the safety of Alpha DaRT in combination with chemotherapy, based on the cumulative incidence rate, severity and outcome of device related AEs. Classification of AEs will be done according to CTCAE V5. The secondary objectives of the study are to: * Assess efficacy of the Alpha DaRT sources in combination with chemotherapy, determined by overall and progression-free survival. * Assess pain control * Assess rate of surgical resection in Cohort 1.