先天性耳前瘘管,是在胚胎发育过程中第一腮沟的遗迹。此瘘管多为盲管,管壁内有复层鳞状上皮,具有毛囊、皮脂腺、汗腺等。瘘口常有白色豆腐渣样物溢出。细菌在管内生长繁殖可引起感染或形成脓肿,而且经常复发。 Congenital ear fistula, is the rudiment of the first gut groove during embryonic development. This fistula mostly blind tube, the tube wall stratified squamous epithelium, with hair follicles, sebaceous glands, sweat glands and so on. Fistula often spilled white bean curd samples. Bacteria grow and multiply in the tube can cause infection or the formation of abscesses, and often recur.