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Cystic lymphatic malformations are haemodynamically inactive vascular malformations that never regress. During a nine-year period, 52 patients with cervico-facial superficial cystic lymphatic malformations underwent percutaneous sclerotherapy with Ethibloc (a corn-based alcohol derivative). In 57 percent (30/52) of cases, the outcome of sclerotherapy alone was excellent or good: in 19 percent (10/52), the procedure had to be combined with surgery for aesthetic reasons; and in the remaining 24 percent (12/52), the treatment failed. The results suggest percutaneous sclerotherapy with Ethibloc to be safe and effective, and that it is to be recommended as the treatment of choice in cases of superficial cystic lymphatic malformations.