Pyoderma gangrenosum confused with congenital preauricular fistula infection: A case report  

作　　者：Yang Zhao Rou-Yu Fang Guo-Dong Feng Ting-Ting Cui Zhi-Qiang Gao 

机构地区：[1]Department of Otolaryngology,Peking Union Medical College Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100730,China [2]Department of Dermatology,Peking Union Medical College Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100730,China

出　　处：《World Journal of Clinical Cases》2020年第9期1679-1684,共6页世界临床病例杂志

基　　金：Supported by Beijing Natural Science Foundation,No.7194309.

摘　　要：BACKGROUND Pyoderma gangrenosum resulting from or associated with congenital preauricular fistula is rarely reported.CASE SUMMARY We report a rare case of pyoderma gangrenosum misdiagnosed as preauricular fistula infection.To our knowledge,this is the first report to describe pyoderma gangrenosum originating from the site of preauricular fistula.The lesion continued expanding even after combined treatment of systemic antibiotics and thorough debridement.Taking into account the possibility of pyoderma gangrenosum,we applied soft care with normal saline and Vaseline gauze dressing.Systemic corticosteroids were not used until intestinal Clostridium difficile was controlled.No local recurrence was noted at the 12-mo follow-up.CONCLUSION This case highlights the necessity of considering rare diseases,such as pyoderma gangrenosum,when the preauricular sinus deteriorates with general management.The treatment strategy is mutually conflicting between pyoderma gangrenosum and infection of the preauricular sinus.

关 键 词：PREAURICULAR FISTULA PYODERMA gangrenosum GLUCOCORTICOIDS Case REPORT 

分 类 号：R764[医药卫生—耳鼻咽喉科] R753[医药卫生—临床医学]