Widely distributed purple-colored bullae and nodules in the oral cavity

Affiliations

• ¹ State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China.
• ² State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China; Department of Stomatology, Beijing Ditan Hospital Capital Medical University, Beijing P.R. China.
• ³ Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China.
• ⁴ Department of Oral Pathology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China. Electronic address: 948140308@qq.com.
• ⁵ State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China. Electronic address: zhouhm@scu.edu.cn.