Treatment of Low-flow Venous Malformations With Electrosclerotherapy. Prospective Observational Study

Inclusion Criteria: * Diagnosis of low-flow venous malformations eligible for electrosclerotherapy * Non-indication for embolizing treatment * Previous treatments are not an exclusion factor, provided that at least 30 days have elapsed. Exclusion Criteria: * Previous treatment for \< 30 days * Pregnancy and lactation status * Patients of childbearing age without contraceptive use * Presence of metal synthetic media * COPD with FiO2 \< 30 mmHg * Impaired renal function with eGFR\<30 ml/min/1.73mq * Patients with Bleomycin intolerance or previous episodes of toxicity Bleomycin-related * Patients who have already received a cumulative dose of Bleomycin ≥100 mg * Patients who have undergone prior thoracic radiotherapy * Patients with a history of seizures and epilepsy