Wang Jia-ling, Hou Zhao-hui, Chen Lei, Yuan Jing, Yang Shi-ming
Department of Otolaryngology, Head and Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, China.
Acta Otolaryngol. 2011 Feb;131(2):221-4. doi: 10.3109/00016489.2010.504738. Epub 2010 Sep 6.
Dermoid tumor in the eustachian tube (DTIET) is a congenital disease. Our patient had the symptom of discharging pus in the left ear when he was about 1 year old. Due to lack of understanding of the disease at that time, he was misdiagnosed as having cholesteatoma, for which he underwent three surgical operations in the middle ear. Recently, with detailed preoperative imaging estimation and full consideration of surgical risks, under the guidance of TV, using oto-endoscopes and nasal endoscopes jointly, the DTIET was resected completely via the combined approach of pharyngeal and tympanic openings of the eustachian tube. This case indicated again that it was a space-occupying lesion in the eustachian tube. On the basis of the characteristic expressions of CT and MRI, the possibility of DTIET should be fully considered. Endoscopic technology has advantages for surgical operation in the eustachian tube, which might remove the mass and achieve the aim of minimal trauma.
咽鼓管皮样囊肿（DTIET）是一种先天性疾病。我们的患者在1岁左右时出现左耳流脓症状。由于当时对该疾病认识不足，他被误诊为胆脂瘤，为此在中耳接受了三次手术。近期，通过详细的术前影像学评估并充分考虑手术风险，在电视辅助下，联合使用耳内镜和鼻内镜，经咽鼓管咽口和鼓口联合入路将DTIET完全切除。该病例再次表明这是一种咽鼓管占位性病变。基于CT和MRI的特征性表现，应充分考虑DTIET的可能性。内镜技术在咽鼓管手术操作方面具有优势，可切除肿物并实现微创目的。
