Case Report
Copyright ©The Author(s) 2019. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Nov 26, 2019; 7(22): 3778-3783
Published online Nov 26, 2019. doi: 10.12998/wjcc.v7.i22.3778
Contrast-enhanced computed tomography findings of a huge perianal epidermoid cyst: A case report
Pei-Ming Sun, He-Ming Yang, Yan Zhao, Jian-Wu Yang, Hong-Feng Yan, Jing-Xin Liu, Hong-Wei Sun, Yan Cui
Pei-Ming Sun, He-Ming Yang, Yan Zhao, Jian-Wu Yang, Hong-Feng Yan, Jing-Xin Liu, Hong-Wei Sun, Yan Cui, Department of General Surgery, PLA Strategic Support Force Characteristic Medical Center, Beijing 100101, China
Author contributions: Sun PM and Sun HW were the patient’s surgeons, reviewed the literature, and contributed to manuscript drafting; Yan HF, Liu JX, and Yang JW reviewed the literature and contributed to manuscript drafting; Yang HM, Cui Y, and Zhao Y were responsible for the revision of the manuscript for important intellectual content; all authors issued final approval for the version to be submitted.
Informed consent statement: Written informed consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: There is no conflict of interest that should be disclosed.
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 which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (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: Hong-Wei Sun, MD, PhD, Department of General Surgery, PLA Strategic Support Force Characteristic Medical Center, 9 Anxiangbeili, Chaoyang District, Beijing 100101, China. shwsport@yeah.net
Telephone: +86-10-66356729 Fax: +86-10-66356729
Received: September 12, 2019
Peer-review started: September 12, 2019
First decision: September 23, 2019
Revised: October 10, 2019
Accepted: October 15, 2019
Article in press: October 15, 2019
Published online: November 26, 2019
Abstract
BACKGROUND

Epidermoid cysts can be found at any location in the human body. However, perianal epidermoid cysts are extremely rare and only a few cases have been reported. As far as we know, there is no special literature on the value of contrast-enhanced computed tomography (CT) for the diagnosis of perianal epidermoid cysts.

CASE SUMMARY

A 60-year-old male patient presented to the department of general surgery of PLA Strategic Support Force Characteristic Medical Center with the chief complaint of a mass in the perianal region gradually expanding for more than 30 years and perianal discomfort upon sitting for a preceding period of 2 mo. Physical examination revealed a painless mass in the left perianal region. Contrast-enhanced CT was used for preoperative diagnosis. The patient was treated by total mass excision under epidural anesthesia. Postoperative pathological examination revealed the presence of a perianal epidermoid cyst. The patient showed a satisfactory recovery during the 6-month follow-up period.

CONCLUSION

Contrast-enhanced CT may be a beneficial, useful, and convenient approach for assistance for preoperative diagnosis and surgical decision-making for patients with perianal epidermoid cysts.

Keywords: Epidermoid cyst, Perianal, Contrast-enhanced computed tomography, Case report, General surgery, Preoperative diagnosis

Core tip: Perianal epidermoid cysts are extremely rare and there is no special literature on the value of contrast-enhanced computed tomography (CT) for the diagnosis of perianal epidermoid cysts. This case report describes the value of contrast-enhanced CT for the diagnosis and surgical decision-making of patients with perianal epidermoid cysts and highlights that it may be a beneficial, useful, and convenient approach for these patients.