Bleomycin Electrosclerotherapy Treatment of Vascular Malformations: A Feasibility Study

Inclusion Criteria: * New patients presenting with a vascular malformation suitable for Bleomycin sclerotherapy treatment * Existing patients presenting with a poor response to treatment, performed more than 6 months ago * Placement of a needle electrode into the vascular malformation is technically possible * Evaluation of response to treatment is possible on photo documentation * Patients agreeing to participate in the study * The ability to understand written and spoken English Exclusion Criteria: * Patients not agreeing to participate in the study * Pregnancy * Breastfeeding * Previous high systemic Bleomycin exposure (more than 3000 IU) * Patients unable to provide written, informed consent * Patients in which needle electrode placement is not possible * Response to treatment not evaluable by photo documentation * Patients unable to speak English