Articles Vol. 63 No. chuyên đề 3-HN Sản Nhi Nghệ An (2022) 30/11/2022

PREAURICULAR SINUS PRESENT AS RECURRENT EPIDERMOID CYST: ROLE OF MICROSURGERY

Doan Thi Hong Hoa1,2, Tang Xuan Hai3,4, Chu Thi Kim Anh5,6, Tran Minh Long3,4
1 University of Medicine and Pharmacy - Vietnam National University
2 Trường Đại học Y dược, ĐHQG Hà Nội
3 Nghe An Hospital of Obstetrics and Pediatrics
4 Bệnh viện Sản Nhi Nghệ An
5 Nghe An General Friendship Hospital
6 Bệnh viện Hữu nghị Đa khoa Nghệ An
Corresponding author: kimanhcuong@gmail.com
DOI: 10.52163/yhc.v63i8.533
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Keywords
Variant type of preauricular sinus, epidermoid cyst and microsurgery.
Abstract

Preauricular sinuses are common congenital malformations that usually occur at the anterior
margin of the ascending limb of the helix. Classically, a preauricular sinus presents as a small
opening, usually near the anterior to crus of helix and anterior-superior of tragus. The variant type of
preauricular sinus is called postauricular sinus with location of the fistula pit positioned posterior to
the imaginary tragal extended line. In fact, preauricular sinuses can also mimic epidermoid cyst or
first branchial cleft fistula if pit of sinus was not clear. In this study, we reported 3 rare cases of
postauricular sinus with recurrent epidermoid cyst at anterior area of tragus and swelling at
intertragal notch, the small opening “pit” of the sinuses can only be identified under a microscopy
and in addition, inside- out methode seemed to be a better approach to control total ramifications with
squamous epithelium.

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