Chen Hua1, Lizhen Wang2, Xi Yang1, Yunbo Jin1, Xiaoxi Lin1. 1. Department of Plastic and Reconstructive Surgery, Division of Vascular Anomalies, Shanghai Ninth People's Hospital, Shanghai Jiaotong University, School of Medicine. Shanghai China. 2. Department of Oral Pathology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University, School of Medicine. Shanghai China.