Case Report
Copyright ©The Author(s) 2020. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. May 6, 2020; 8(9): 1679-1684
Published online May 6, 2020. doi: 10.12998/wjcc.v8.i9.1679
Pyoderma gangrenosum confused with congenital preauricular fistula infection: A case report
Yang Zhao, Rou-Yu Fang, Guo-Dong Feng, Ting-Ting Cui, Zhi-Qiang Gao
Yang Zhao, Guo-Dong Feng, Ting-Ting Cui, Zhi-Qiang Gao, Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
Rou-Yu Fang, Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
Author contributions: Zhao Y, Cui TT and Feng GD were the patient surgeons, reviewed the literature and contributed to manuscript drafting; Fang RY was the consulting dermatologist and analyzed and interpreted the pathology; Gao ZQ directed the diagnosis and reviewed the literature; and all authors approved the final version for submission.
Supported by Beijing Natural Science Foundation, No. 7194309.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: The authors declare that they have no conflict of interest.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Zhi-Qiang Gao, MD, Chief Doctor, Director, Professor, Surgeon, Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Wangfujing, Dongcheng District, Beijing 100730, China. gzqent@163.com
Received: January 6, 2020
Peer-review started: January 6, 2020
First decision: March 18, 2020
Revised: March 22, 2020
Accepted: April 4, 2020
Article in press: April 4, 2020
Published online: May 6, 2020
Core Tip

Core tip: Acute infection of the preauricular sinus is common in clinical practice, while pyoderma gangrenosum is rare. We here report a rare case of pyoderma gangrenosum that was initially treated as common preauricular sinus infection and did not respond to traditional management. Pyoderma gangrenosum is a noninfectious inflammatory dermatosis that presents as an inflammatory disorder of the skin. The most common comorbidity is inflammatory bowel disease. Diagnosis of pyoderma gangrenosum should be considered when standard management is not effective or it is complicated with inflammatory bowel diseases.