Evaluation of treatment outcomes of superficial vascular malformation type I, II by DSA-guided Polidocanol foam injection sclerotherapy Materials and method: 46 patients with superficial vascular malformation type I, and II were treated with DSA-guided sclerotherapy by Aetoxisclerol 2% (Polidocanol) with a dose from 2 - 4 ml each time, from January 2019 to March 2022, in Diagnostic Imaging Department - Hanoi Oncology Hospital.