先天性耳前瘘管系先天性第一鳃沟在胚胎期融合不全形成的盲道,多具分支。因管腔内积有脱落上皮及角化物质,如因感染化脓可向深部发展或穿破皮肤形成瘘管。瘘管分支一般较短;亦有深达鼓沟者。临床作瘘管切除时常用美蓝液注入瘘管或用探针探查切除,但复发多见。患者常因多年反复发作而痛苦。我科自1985年开始利用手术显微镜观察下直接用眼科小剪剪开管腔,检查瘘管色白、 Congenital otitis media fistula congenital first gill in the embryonic incomplete integration of the blind, multiple branches. Due to the product of the lumen has shed epithelial and keratinized material, such as infection due to purulent to deep development or piercing the skin to form a fistula. Fistula branches are generally shorter; also have deep up to those who ditch. Clinical fistula resection commonly used methylene blue fluid into the fistula or probe exploration, but the recurrence more common. Patients often suffer from repeated attacks for many years. My department since 1985, the use of surgical microscopy under direct observation with a small scissors ophthalmic cut open the lumen, check fistula color,