Penjor Dorji, Kitamura Morimasa
Department of Otorhinolaryngology, Jigme Dorji Wangchuck National Referral Hospital, Thimphu, Bhutan.
Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
SAGE Open Med Case Rep. 2021 May 13;9:2050313X211014515. doi: 10.1177/2050313X211014515. eCollection 2021.
Collaural fistula is a very rare Work Type II first branchial cleft anomaly in which there is a complete fistulous tract between external auditory canal and the neck. Misdiagnosis and mismanagement can lead to prolonged morbidity and complications due to repeated infections. We present a case of an 18-year-old lady with a recurrent discharging sinus on her neck for 4 years. She has been treated with repeated incision and drainage and multiple antibiotics in the past. Otoscopic examination revealed an opening on the floor of the left external auditory canal. A diagnosis of an infected collaural fistula was made. Complete excision of the fistulous tract was done after treatment of the active infection. On follow-up, there was no further recurrence at 1 year. Sound knowledge of embryology of branchial anomalies with good history and examination is important to make correct and early diagnosis to prevent morbidity.
外耳道瘘是一种非常罕见的工作类型II型第一鳃裂畸形，外耳道与颈部之间存在完整的瘘管。误诊和管理不当会因反复感染导致病程延长和并发症。我们报告一例18岁女性，颈部反复流脓性窦道4年。过去她接受了反复的切开引流和多种抗生素治疗。耳镜检查发现左外耳道底部有一个开口。诊断为感染性外耳道瘘。在积极感染得到治疗后，完整切除了瘘管。随访1年，无进一步复发。了解鳃裂畸形的胚胎学知识并结合良好的病史和检查对于做出正确的早期诊断以预防发病至关重要。
