RESUMO
Microfocused ultrasound (MFU),as a new approach for facial skin tightening and lifting,has been widely applied in recent years.Its action mechanism is that heat can be transmitted to the deep dermis and superficial musculoaponeurotic system through precise and depth-consistent microcoagulation zones,leading to the contraction and remodeling of skin collagen without damage to the epidermis.MFU has high safety with few serious adverse reactions.However,there are still doubts whether it can lead to subcutaneous scar formation,the risk of lipolysis,or nerve,vessel and eye injuries,etc.Appropriate use and selection of patients can minimize the occurrence of these rare adverse reactions as much as possible.
RESUMO
Microfocused ultrasound (MFU) , as a new approach for facial skin tightening and lifting, has been widely applied in recent years. Its action mechanism is that heat can be transmitted to the deep dermis and superficial musculoaponeurotic system through precise and depth-consistent microcoagulation zones, leading to the contraction and remodeling of skin collagen without damage to the epidermis. MFU has high safety with few serious adverse reactions. However, there are still doubts whether it can lead to subcutaneous scar formation, the risk of lipolysis, or nerve, vessel and eye injuries, etc. Appropriate use and selection of patients can minimize the occurrence of these rare adverse reactions as much as possible.
RESUMO
Objective To obtain a simple method to treat segmental vitiligo. Methods The grafting was carried out as following: the epidermal cellular suspension was obtained from leg skin by razor blade after trypsinization. The suspension of epidermal cells were injected into depigmented lesion blisters which were produced by freezing with nitrogen. Results All of the patients which received treatment had successful repigmentation. Conclusion This technique is an effective and simple method for treating patients with segmental vitiligo.