['To observe the therapeutic effect of 120 cases venous malformations treated by cryotherapy combine with pingyangmycin.', 'Pingyangmycin was injected into venous malformations and cryotherapy with liquid nitrogen was followed immediately.', 'Cure rate was 77.5%, incomplete cure rate was 17.5% and efficiency rate was 5%.'] Do [ Cryotherapy combine with pingyangmycin for the treatment of venous malformations ]?