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先天性耳前窦道系一种外显不全的常染色体显性遗传病,据信乃由于胚胎早期原始耳结节融合不全所致(His),常单独发生而不伴有其他外耳畸形。窦道表现为耳前有一窦囊,由之向前、后方向有多个分支管道,管道向前方延伸者常见,但亦可向后方伸展至乳突部者,感染时可表现为乳突部脓肿。如双耳均发病者,两侧窦道的形状和范围多相似。耳前窦道位于颈阔肌深面与腮腺和颞肌膜之间,与颞浅动脉关系密切。有些病例可终生无症状,仅于耳前有一小窝状瘘口,无需处理;其间断流脓、耳前痛性肿胀、脓肿、每需切开引流者,应于炎症控制后完整切除窦道。作者根据在2年内为6例(2例双侧手术,故共8个窦道)患者手术的经验,提出一种简
Congenital anterior sinus tract An underdeveloped autosomal dominant genetic disorder believed to be due to incomplete primary ear nodules (His), often occurring alone without any other external ear deformities. Sinus sinus showed a sinus before the ear, from the forward, after the direction of a number of branches of the pipeline, extending to the front of the pipeline are common, but also can be extended to the rear of the mastoid who may show infection of the mastoid Abscess. Such as the incidence of both ears, both sides of the sinus shape and extent of similar. Anterior sinus tract located in the deep platysma and parotid and temporal muscle, between the temporal superficial artery. Some cases of life-long asymptomatic, only in front of a small fossa fossa mouth, without treatment; its intermittent pus, ear pain swelling, abscess, each need to incision and drainage should be completely removed after inflammation control sinus . According to the author’s experience of surgery in 6 patients (2 bilateral operations and 8 sinus channels in total) within 2 years, a simple